diff --git a/lib/server-core/pom.xml b/lib/server-core/pom.xml
index f5e19f770..91de276d2 100644
--- a/lib/server-core/pom.xml
+++ b/lib/server-core/pom.xml
@@ -74,7 +74,25 @@
   <build>
     <plugins>
       <plugin>
-        <groupId>org.antlr</groupId>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>build-helper-maven-plugin</artifactId>
+        <version>1.7</version>
+        <executions>
+          <execution>
+            <phase>generate-sources</phase>
+            <goals>
+              <goal>add-source</goal>
+            </goals>
+            <configuration>
+              <sources>
+                <source>target/generated-sources/antlr4</source>
+              </sources>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+      <plugin>
+      <groupId>org.antlr</groupId>
         <artifactId>antlr4-maven-plugin</artifactId>
         <version>${antlr.version}</version>
         <executions>