diff --git a/src/DictTrie.hpp b/src/DictTrie.hpp
index 17af029..5a7390c 100644
--- a/src/DictTrie.hpp
+++ b/src/DictTrie.hpp
@@ -10,7 +10,6 @@
 #include <limits>
 #include "Limonp/StringUtil.hpp"
 #include "Limonp/Logger.hpp"
-#include "Limonp/InitOnOff.hpp"
 #include "TransCode.hpp"
 #include "Trie.hpp"
 
@@ -41,7 +40,7 @@ namespace CppJieba
 
     typedef map<size_t, const DictUnit*> DagType;
 
-    class DictTrie: public InitOnOff
+    class DictTrie
     {
         public:
             typedef Trie<Unicode::value_type, DictUnit, Unicode, vector<Unicode>, vector<const DictUnit*> > TrieType;
@@ -65,12 +64,11 @@ namespace CppJieba
             {
                 _trie = NULL;
                 _minWeight = MAX_DOUBLE;
-                _setInitFlag(false);
             }
             DictTrie(const string& dictPath, const string& userDictPath = "")
             {
                 new (this) DictTrie();
-                _setInitFlag(init(dictPath, userDictPath));
+                init(dictPath, userDictPath);
             }
             ~DictTrie()
             {
@@ -83,7 +81,7 @@ namespace CppJieba
         public:
             bool init(const string& dictPath, const string& userDictPath = "")
             {
-                assert(!_getInitFlag());
+                assert(!_trie);
                 _loadDict(dictPath, _nodeInfos);
                 _calculateWeight(_nodeInfos);
                 _minWeight = _findMinWeight(_nodeInfos);
@@ -96,7 +94,7 @@ namespace CppJieba
                 _shrink(_nodeInfos);
                 _trie = _creatTrie(_nodeInfos);
                 assert(_trie);
-                return _setInitFlag(true);
+                return true;
             }
 
         public:
diff --git a/src/HMMSegment.hpp b/src/HMMSegment.hpp
index 6afe185..6935958 100644
--- a/src/HMMSegment.hpp
+++ b/src/HMMSegment.hpp
@@ -35,20 +35,15 @@ namespace CppJieba
             vector<EmitProbMap* > _emitProbVec;
 
         public:
-            HMMSegment(){_setInitFlag(false);}
+            HMMSegment(){}
             explicit HMMSegment(const string& filePath)
             {
-                _setInitFlag(init(filePath));
+                LIMONP_CHECK(init(filePath));
             }
             virtual ~HMMSegment(){}
         public:
             bool init(const string& filePath)
             {
-                if(_getInitFlag())
-                {
-                    LogError("inited already.");
-                    return false;
-                }
                 memset(_startProb, 0, sizeof(_startProb));
                 memset(_transProb, 0, sizeof(_transProb));
                 _statMap[0] = 'B';
@@ -59,11 +54,7 @@ namespace CppJieba
                 _emitProbVec.push_back(&_emitProbE);
                 _emitProbVec.push_back(&_emitProbM);
                 _emitProbVec.push_back(&_emitProbS);
-                if(!_setInitFlag(_loadModel(filePath.c_str())))
-                {
-                    LogError("_loadModel(%s) failed.", filePath.c_str());
-                    return false;
-                }
+                LIMONP_CHECK(_loadModel(filePath.c_str()));
                 LogInfo("HMMSegment init(%s) ok.", filePath.c_str());
                 return true;
             }
@@ -104,7 +95,6 @@ namespace CppJieba
         private:
             bool _cut(Unicode::const_iterator begin, Unicode::const_iterator end, vector<Unicode>& res) const 
             {
-                assert(_getInitFlag());
                 vector<size_t> status; 
                 if(!_viterbi(begin, end, status))
                 {
@@ -128,7 +118,6 @@ namespace CppJieba
         public:
             virtual bool cut(Unicode::const_iterator begin, Unicode::const_iterator end, vector<string>& res)const
             {
-                assert(_getInitFlag());
                 if(begin == end)
                 {
                     return false;
diff --git a/src/KeywordExtractor.hpp b/src/KeywordExtractor.hpp
index 90be022..36c7da0 100644
--- a/src/KeywordExtractor.hpp
+++ b/src/KeywordExtractor.hpp
@@ -10,7 +10,7 @@ namespace CppJieba
     using namespace Limonp;
 
     /*utf8*/
-    class KeywordExtractor: public InitOnOff
+    class KeywordExtractor
     {
         private:
             MixSegment _segment;
@@ -20,10 +20,10 @@ namespace CppJieba
 
             unordered_set<string> _stopWords;
         public:
-            KeywordExtractor(){_setInitFlag(false);};
+            KeywordExtractor(){};
             KeywordExtractor(const string& dictPath, const string& hmmFilePath, const string& idfPath, const string& stopWordPath)
             {
-                _setInitFlag(init(dictPath, hmmFilePath, idfPath, stopWordPath));
+                LIMONP_CHECK(init(dictPath, hmmFilePath, idfPath, stopWordPath));
             };
             ~KeywordExtractor(){};
 
@@ -32,13 +32,13 @@ namespace CppJieba
             {
                 _loadIdfDict(idfPath);
                 _loadStopWordDict(stopWordPath);
-                return _setInitFlag(_segment.init(dictPath, hmmFilePath));
+                LIMONP_CHECK(_segment.init(dictPath, hmmFilePath));
+                return true;
             };
         public:
 
             bool extract(const string& str, vector<string>& keywords, size_t topN) const
             {
-                assert(_getInitFlag());
                 vector<pair<string, double> > topWords;
                 if(!extract(str, topWords, topN))
                 {
diff --git a/src/Limonp/HandyMacro.hpp b/src/Limonp/HandyMacro.hpp
index 6ab71c7..1468690 100644
--- a/src/Limonp/HandyMacro.hpp
+++ b/src/Limonp/HandyMacro.hpp
@@ -4,7 +4,7 @@
 #include <stdio.h>
 
 #define LIMONP_CHECK(exp) \
-    if(exp){fprintf(stderr, "File:%s, Line:%d Exp:[" #exp "] is true, abort.\n", __FILE__, __LINE__); abort();}
+    if(!(exp)){fprintf(stderr, "File:%s, Line:%d Exp:[" #exp "] is true, abort.\n", __FILE__, __LINE__); abort();}
 
 #define print(x) cout<< #x": " << x <<endl
 /*
diff --git a/src/MPSegment.hpp b/src/MPSegment.hpp
index 1b8cde7..de0f073 100644
--- a/src/MPSegment.hpp
+++ b/src/MPSegment.hpp
@@ -34,24 +34,18 @@ namespace CppJieba
             DictTrie _dictTrie;
 
         public:
-            MPSegment(){_setInitFlag(false);};
-            explicit MPSegment(const string& dictPath, const string& userDictPath = "")
+            MPSegment(){};
+            MPSegment(const string& dictPath, const string& userDictPath = "")
             {
-                _setInitFlag(init(dictPath, userDictPath));
+                LIMONP_CHECK(init(dictPath, userDictPath));
             };
             virtual ~MPSegment(){};
         public:
             bool init(const string& dictPath, const string& userDictPath = "")
             {
-                if(_getInitFlag())
-                {
-                    LogError("already inited before now.");
-                    return false;
-                }
-                _dictTrie.init(dictPath, userDictPath);
-                assert(_dictTrie);
+                LIMONP_CHECK(_dictTrie.init(dictPath, userDictPath));
                 LogInfo("MPSegment init(%s) ok", dictPath.c_str());
-                return _setInitFlag(true);
+                return true;
             }
             bool isUserDictSingleChineseWord(const Unicode::value_type & value) const
             {
@@ -61,7 +55,6 @@ namespace CppJieba
             using SegmentBase::cut;
             virtual bool cut(Unicode::const_iterator begin, Unicode::const_iterator end, vector<string>& res)const
             {
-                assert(_getInitFlag());
                 if(begin == end)
                 {
                     return false;
@@ -92,7 +85,6 @@ namespace CppJieba
                 {
                     return false;
                 }
-                assert(_getInitFlag());
                 vector<SegmentChar> segmentChars(end - begin);
 
                 //calc DAG
diff --git a/src/MixSegment.hpp b/src/MixSegment.hpp
index f8a4369..ff06f47 100644
--- a/src/MixSegment.hpp
+++ b/src/MixSegment.hpp
@@ -14,36 +14,25 @@ namespace CppJieba
             MPSegment _mpSeg;
             HMMSegment _hmmSeg;
         public:
-            MixSegment(){_setInitFlag(false);};
+            MixSegment(){};
             MixSegment(const string& mpSegDict, const string& hmmSegDict, const string& userDict = "")
             {
-                _setInitFlag(init(mpSegDict, hmmSegDict, userDict));
-                assert(_getInitFlag());
+                LIMONP_CHECK(init(mpSegDict, hmmSegDict, userDict));
             }
             virtual ~MixSegment(){}
         public:
             bool init(const string& mpSegDict, const string& hmmSegDict, const string& userDict = "")
             {
-                assert(!_getInitFlag());
-                if(!_mpSeg.init(mpSegDict, userDict))
-                {
-                    LogError("_mpSeg init");
-                    return false;
-                }
-                if(!_hmmSeg.init(hmmSegDict))
-                {
-                    LogError("_hmmSeg init");
-                    return false;
-                }
+                LIMONP_CHECK(_mpSeg.init(mpSegDict, userDict));
+                LIMONP_CHECK(_hmmSeg.init(hmmSegDict));
                 LogInfo("MixSegment init(%s, %s)", mpSegDict.c_str(), hmmSegDict.c_str());
-                return _setInitFlag(true);
+                return true;
             }
         public:
             using SegmentBase::cut;
         public:
             virtual bool cut(Unicode::const_iterator begin, Unicode::const_iterator end, vector<Unicode>& res) const
             {
-                assert(_getInitFlag());
                 vector<Unicode> words;
                 words.reserve(end - begin);
                 if(!_mpSeg.cut(begin, end, words))
@@ -98,7 +87,6 @@ namespace CppJieba
 
             virtual bool cut(Unicode::const_iterator begin, Unicode::const_iterator end, vector<string>& res)const
             {
-                assert(_getInitFlag());
                 if(begin == end)
                 {
                     return false;
diff --git a/src/PosTagger.hpp b/src/PosTagger.hpp
index 325e765..63f13c0 100644
--- a/src/PosTagger.hpp
+++ b/src/PosTagger.hpp
@@ -9,32 +9,29 @@ namespace CppJieba
 {
     using namespace Limonp;
 
-    class PosTagger: public InitOnOff
+    class PosTagger
     {
         private:
             MixSegment _segment;
             DictTrie _dictTrie;
 
         public:
-            PosTagger(){_setInitFlag(false);};
+            PosTagger(){};
             PosTagger(const string& dictPath, const string& hmmFilePath, const string& charStatus, const string& startProb, const string& emitProb, const string& endProb, const string& transProb)
             {
-                _setInitFlag(init(dictPath, hmmFilePath, charStatus, startProb, emitProb, endProb, transProb));
+                LIMONP_CHECK(init(dictPath, hmmFilePath, charStatus, startProb, emitProb, endProb, transProb));
             };
             ~PosTagger(){};
         public:
             bool init(const string& dictPath, const string& hmmFilePath, const string& charStatus, const string& startProb, const string& emitProb, const string& endProb, const string& transProb)
             {
-                
-                assert(!_getInitFlag());
-                _dictTrie.init(dictPath);
-                assert(_dictTrie);
-                return _setInitFlag(_segment.init(dictPath, hmmFilePath));
+                LIMONP_CHECK(_dictTrie.init(dictPath));
+                LIMONP_CHECK(_segment.init(dictPath, hmmFilePath));
+                return true;
             };
 
             bool tag(const string& src, vector<pair<string, string> >& res)
             {
-                assert(_getInitFlag());
                 vector<string> cutRes;
                 if (!_segment.cut(src, cutRes))
                 {
diff --git a/src/QuerySegment.hpp b/src/QuerySegment.hpp
index 8f284eb..e942e6c 100644
--- a/src/QuerySegment.hpp
+++ b/src/QuerySegment.hpp
@@ -23,32 +23,20 @@ namespace CppJieba
         size_t _maxWordLen;
 
     public:
-        QuerySegment(){_setInitFlag(false);};
+        QuerySegment(){};
         QuerySegment(const string& dict, const string& model, size_t maxWordLen)
         {
-            _setInitFlag(init(dict, model, maxWordLen));
+            init(dict, model, maxWordLen);
         };
         virtual ~QuerySegment(){};
     public:
         bool init(const string& dict, const string& model, size_t maxWordLen)
         {
-            if (_getInitFlag())
-            {
-                LogError("inited already.");
-                return false;
-            }
-            if (!_mixSeg.init(dict, model))
-            {
-                LogError("_mixSeg init");
-                return false;
-            }
-            if (!_fullSeg.init(_mixSeg.getDictTrie()))
-            {
-                LogError("_fullSeg init");
-                return false;
-            }
+            LIMONP_CHECK(_mixSeg.init(dict, model));
+            LIMONP_CHECK(_fullSeg.init(_mixSeg.getDictTrie()));
+            assert(maxWordLen);
             _maxWordLen = maxWordLen;
-            return _setInitFlag(true);
+            return true;
         }
 
     public:
@@ -57,7 +45,6 @@ namespace CppJieba
     public:
         bool cut(Unicode::const_iterator begin, Unicode::const_iterator end, vector<Unicode>& res) const
         {
-            assert(_getInitFlag());
             if (begin >= end)
             {
                 LogError("begin >= end");
@@ -102,7 +89,6 @@ namespace CppJieba
 
         bool cut(Unicode::const_iterator begin, Unicode::const_iterator end, vector<string>& res) const
         {
-            assert(_getInitFlag());
             if (begin >= end)
             {
                 LogError("begin >= end");
diff --git a/src/SegmentBase.hpp b/src/SegmentBase.hpp
index 6b3ca93..25d384f 100644
--- a/src/SegmentBase.hpp
+++ b/src/SegmentBase.hpp
@@ -3,8 +3,8 @@
 
 #include "TransCode.hpp"
 #include "Limonp/Logger.hpp"
-#include "Limonp/InitOnOff.hpp"
 #include "Limonp/NonCopyable.hpp"
+#include "Limonp/HandyMacro.hpp"
 #include "ISegment.hpp"
 #include <cassert>
 
@@ -20,7 +20,7 @@ namespace CppJieba
     const UnicodeValueType SPECIAL_SYMBOL[] = {32u, 9u, 10u};  
 #endif
 
-    class SegmentBase: public ISegment, public InitOnOff, public NonCopyable
+    class SegmentBase: public ISegment, public NonCopyable
     {
         public:
             SegmentBase(){_loadSpecialSymbols();};
diff --git a/test/load_test.cpp b/test/load_test.cpp
index f2a5cea..2d9543d 100644
--- a/test/load_test.cpp
+++ b/test/load_test.cpp
@@ -11,7 +11,6 @@ using namespace CppJieba;
 void cut(size_t times = 20)
 {
     MixSegment seg("../dict/jieba.dict.utf8", "../dict/hmm_model.utf8");
-    assert(seg);
     vector<string> res;
     string doc;
     ifstream ifs("../test/testdata/weicheng.utf8");
@@ -32,7 +31,6 @@ void cut(size_t times = 20)
 void extract(size_t times = 400)
 {
     KeywordExtractor extractor("../dict/jieba.dict.utf8", "../dict/hmm_model.utf8", "../dict/idf.utf8", "../dict/stop_words.utf8");
-    assert(extractor);
     vector<string> words;
     string doc;
     ifstream ifs("../test/testdata/review.100");
diff --git a/test/unittest/TSegments.cpp b/test/unittest/TSegments.cpp
index ac2ad79..41c9d65 100644
--- a/test/unittest/TSegments.cpp
+++ b/test/unittest/TSegments.cpp
@@ -17,8 +17,6 @@ TEST(MixSegmentTest, Test1)
     const char* str2 = "B超 T恤";
     const char* res2[] = {"B超"," ", "T恤"};
     vector<string> words;
-    ASSERT_TRUE(segment);
-
     ASSERT_TRUE(segment.cut(str, words));
     ASSERT_EQ(words, vector<string>(res, res + sizeof(res)/sizeof(res[0])));
     ASSERT_TRUE(segment.cut(str2, words));
@@ -29,7 +27,6 @@ TEST(MixSegmentTest, Test1)
 TEST(MixSegmentTest, NoUserDict)
 {
     MixSegment segment("../dict/extra_dict/jieba.dict.small.utf8", "../dict/hmm_model.utf8");
-    ASSERT_TRUE(segment);
     const char* str = "令狐冲是云计算方面的专家";
     vector<string> words;
     ASSERT_TRUE(segment.cut(str, words));
@@ -40,7 +37,6 @@ TEST(MixSegmentTest, NoUserDict)
 TEST(MixSegmentTest, UserDict)
 {
     MixSegment segment("../dict/extra_dict/jieba.dict.small.utf8", "../dict/hmm_model.utf8", "../test/testdata/userdict.utf8");
-    ASSERT_TRUE(segment);
     const char* str = "令狐冲是云计算方面的专家";
     vector<string> words;
     ASSERT_TRUE(segment.cut(str, words));
@@ -55,7 +51,6 @@ TEST(MPSegmentTest, Test1)
     const char* str = "我来自北京邮电大学。";
     const char* res[] = {"我", "来自", "北京邮电大学", "。"};
     vector<string> words;
-    ASSERT_TRUE(segment);
     ASSERT_TRUE(segment.cut(str, words));
     ASSERT_EQ(words, vector<string>(res, res + sizeof(res)/sizeof(res[0])));
 
@@ -105,7 +100,6 @@ TEST(HMMSegmentTest, Test1)
     const char* str = "我来自北京邮电大学。。。学号123456";
     const char* res[] = {"我来", "自北京", "邮电大学", "。", "。", "。", "学号", "123456"};
     vector<string> words;
-    ASSERT_TRUE(segment);
     ASSERT_TRUE(segment.cut(str, words));
     ASSERT_EQ(words, vector<string>(res, res + sizeof(res)/sizeof(res[0])));
 }
diff --git a/test/unittest/TTrie.cpp b/test/unittest/TTrie.cpp
index cb65e50..2791884 100644
--- a/test/unittest/TTrie.cpp
+++ b/test/unittest/TTrie.cpp
@@ -55,7 +55,6 @@ TEST(DictTrieTest, Test1)
 TEST(DictTrieTest, UserDict)
 {
     DictTrie trie(DICT_FILE, "../test/testdata/userdict.utf8");
-    ASSERT_TRUE(trie);
     string word = "云计算";
     Unicode unicode;
     ASSERT_TRUE(TransCode::decode(word, unicode));