diff --git a/README.md b/README.md
index 5680e25..d6478b4 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ QQ群:1022221898
   <dependency>
       <groupId>com.github.yulichang</groupId>
       <artifactId>mybatis-plus-join</artifactId>
-      <version>1.1.6</version>
+      <version>1.1.7</version>
   </dependency>
   ```
 - Gradle
diff --git a/pom.xml b/pom.xml
index a2a5d54..2614afb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.github.yulichang</groupId>
     <artifactId>mybatis-plus-join</artifactId>
-    <version>1.1.6</version>
+    <version>1.1.7</version>
     <name>mybatis-plus-join</name>
     <description>An enhanced toolkit of Mybatis-Plus to simplify development.</description>
     <url>https://github.com/yulichang/mybatis-plus-join</url>
diff --git a/src/main/java/com/github/yulichang/wrapper/MPJAbstractWrapper.java b/src/main/java/com/github/yulichang/wrapper/MPJAbstractWrapper.java
index c8bb8b5..d6f207f 100644
--- a/src/main/java/com/github/yulichang/wrapper/MPJAbstractWrapper.java
+++ b/src/main/java/com/github/yulichang/wrapper/MPJAbstractWrapper.java
@@ -434,7 +434,7 @@ public abstract class MPJAbstractWrapper<T, Children extends MPJAbstractWrapper<
      */
     protected final String formatParam(String mapping, Object param) {
         final String genParamName = Constants.WRAPPER_PARAM + paramNameSeq.incrementAndGet();
-        final String paramStr = getParamAlias() + Constants.WRAPPER_PARAM_MIDDLE + genParamName;
+        final String paramStr = getParamAlias() + ".paramNameValuePairs." + genParamName;
         paramNameValuePairs.put(genParamName, param);
         return SqlScriptUtils.safeParam(paramStr, mapping);
     }
@@ -553,7 +553,7 @@ public abstract class MPJAbstractWrapper<T, Children extends MPJAbstractWrapper<
      */
     public Children setParamAlias(String paramAlias) {
         Assert.notEmpty(paramAlias, "paramAlias can not be empty!");
-        Assert.isEmpty(paramNameValuePairs, "Please call this method before working!");
+        Assert.isTrue(CollectionUtils.isEmpty(paramNameValuePairs), "Please call this method before working!");
         Assert.isNull(this.paramAlias, "Please do not call the method repeatedly!");
         this.paramAlias = new SharedString(paramAlias);
         return typedThis;