diff --git a/asterixdb/asterix-maven-plugins/asterix-grammar-extension-maven-plugin/pom.xml b/asterixdb/asterix-maven-plugins/asterix-grammar-extension-maven-plugin/pom.xml
index 0450634..085f8e9 100644
--- a/asterixdb/asterix-maven-plugins/asterix-grammar-extension-maven-plugin/pom.xml
+++ b/asterixdb/asterix-maven-plugins/asterix-grammar-extension-maven-plugin/pom.xml
@@ -94,7 +94,7 @@
             <goals>
               <goal>javacc</goal>
             </goals>
-            <phase>verify</phase>
+            <phase>generate-test-sources</phase>
             <configuration>
               <isStatic>false</isStatic>
               <javaUnicodeEscape>true</javaUnicodeEscape>
@@ -107,7 +107,7 @@
             <goals>
               <goal>jjdoc</goal>
             </goals>
-            <phase>verify</phase>
+            <phase>generate-test-sources</phase>
           </execution>
         </executions>
       </plugin>
diff --git a/asterixdb/asterix-maven-plugins/asterix-grammar-extension-maven-plugin/src/test/resources/lang/extension.jj b/asterixdb/asterix-maven-plugins/asterix-grammar-extension-maven-plugin/src/test/resources/lang/extension.jj
index 0882222..c76a633 100644
--- a/asterixdb/asterix-maven-plugins/asterix-grammar-extension-maven-plugin/src/test/resources/lang/extension.jj
+++ b/asterixdb/asterix-maven-plugins/asterix-grammar-extension-maven-plugin/src/test/resources/lang/extension.jj
@@ -1,21 +1,20 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
 // If you want to put an additional import, just add import statements like the following.
 // import package name
 import org.apache.asterix.lang.extension.EchoStatement;