diff --git a/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlExprParser.java b/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlExprParser.java
index 93e548f6da..5cbc7a8438 100644
--- a/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlExprParser.java
+++ b/src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlExprParser.java
@@ -74,7 +74,7 @@ public MySqlExprParser(String sql){
     }
 
     public MySqlExprParser(String sql, boolean keepComments){
-        this(new MySqlLexer(sql, keepComments, keepComments));
+        this(new MySqlLexer(sql, true, keepComments));
         this.lexer.nextToken();
     }