diff --git a/src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/statement/MySqlCreateTableParser.java b/src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/statement/MySqlCreateTableParser.java
index 65d292a876..343fa06fe4 100644
--- a/src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/statement/MySqlCreateTableParser.java
+++ b/src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/statement/MySqlCreateTableParser.java
@@ -173,6 +173,7 @@ public class MySqlCreateTableParser extends SQLCreateTableParser {
         return column;
     }
 
+    @SuppressWarnings("unused")
     protected SQLTableConstaint parseConstraint() throws ParserException {
         SQLName name = null;
         if (lexer.token() == (Token.CONSTRAINT)) {