diff --git a/src/QuerySegment.hpp b/src/QuerySegment.hpp
index 59e1e44..3d8cd5b 100644
--- a/src/QuerySegment.hpp
+++ b/src/QuerySegment.hpp
@@ -47,6 +47,7 @@ namespace CppJieba
                 LogError("_fullSeg init");
                 return false;
             }
+            _maxWordLen = maxWordLen;
             return _setInitFlag(true);
         }