diff --git a/src/main/java/com/alibaba/druid/wall/spi/SQLServerWallVisitor.java b/src/main/java/com/alibaba/druid/wall/spi/SQLServerWallVisitor.java
index 7b6c13fd1f..4d99362d61 100644
--- a/src/main/java/com/alibaba/druid/wall/spi/SQLServerWallVisitor.java
+++ b/src/main/java/com/alibaba/druid/wall/spi/SQLServerWallVisitor.java
@@ -63,7 +63,7 @@ public class SQLServerWallVisitor extends SQLServerASTVisitorAdapter implements
 
     @Override
     public String toSQL(SQLObject obj) {
-        return SQLUtils.toMySqlString(obj);
+        return SQLUtils.toSQLServerString(obj);
     }
     
 
diff --git a/src/test/java/com/alibaba/druid/bvt/filter/wall/SQLServerWallPermitFunctionTest.java b/src/test/java/com/alibaba/druid/bvt/filter/wall/SQLServerWallPermitFunctionTest.java
index b30fdca15f..c436a9a6c2 100644
--- a/src/test/java/com/alibaba/druid/bvt/filter/wall/SQLServerWallPermitFunctionTest.java
+++ b/src/test/java/com/alibaba/druid/bvt/filter/wall/SQLServerWallPermitFunctionTest.java
@@ -82,7 +82,5 @@ public class SQLServerWallPermitFunctionTest extends TestCase {
         Assert.assertFalse(WallUtils.isValidateSqlServer("SELECT is_srvrolemember(‘sysadmin’, ‘sa’); "));
     }
 
-    public void test_system_user() throws Exception {
-        Assert.assertFalse(WallUtils.isValidateSqlServer("SELECT system_user;"));
-    }
+
 }
diff --git a/src/test/java/com/alibaba/druid/bvt/filter/wall/SQLServerWallPermitObjectTest.java b/src/test/java/com/alibaba/druid/bvt/filter/wall/SQLServerWallPermitObjectTest.java
index 5a2ef21878..290cc30100 100644
--- a/src/test/java/com/alibaba/druid/bvt/filter/wall/SQLServerWallPermitObjectTest.java
+++ b/src/test/java/com/alibaba/druid/bvt/filter/wall/SQLServerWallPermitObjectTest.java
@@ -36,7 +36,11 @@ public class SQLServerWallPermitObjectTest extends TestCase {
         super.tearDown();
     }
 
-    public void test01() throws Exception {
+    public void test_user() throws Exception {
         Assert.assertFalse(WallUtils.isValidateSqlServer("SELECT user;"));
     }
+    
+    public void test_system_user() throws Exception {
+        Assert.assertFalse(WallUtils.isValidateSqlServer("SELECT system_user;"));
+    }
 }