diff --git a/build.xml b/build.xml
index 956cd4c53..dc45098fa 100644
--- a/build.xml
+++ b/build.xml
@@ -87,6 +87,7 @@ build.sysclasspath=ignore
 			</classpath>
 		</java>
 
+		<!--
 		<echo>gunit grammars</echo>
 		<java classname="org.antlr.Tool" fork="true" failonerror="false" maxmemory="300m"
 			dir="${basedir}/gunit/src/org/antlr/v4/gunit">
@@ -100,6 +101,7 @@ build.sysclasspath=ignore
 				<pathelement path="${java.class.path}"/>
 			</classpath>
 		</java>
+		-->
 	</target>
 
     <target name="compile" depends="antlr" description="Compile for generic OS">
@@ -108,7 +110,7 @@ build.sysclasspath=ignore
 		<copy todir="${build.dir}/src" >
 			<fileset dir="${basedir}/tool/src/"/>
 			<fileset dir="${basedir}/runtime/Java/src/"/>
-			<fileset dir="${basedir}/gunit/src/"/>
+			<!-- <fileset dir="${basedir}/gunit/src/"/> -->
 		</copy>
 		<replace dir="${build.dir}/src" token="@version@" value="${version}"/>
         <javac
@@ -161,12 +163,14 @@ build.sysclasspath=ignore
 				<include name="**/*.st"/>
 				<include name="**/*.stg"/>
 			</fileset>
+			<!--
 			<fileset dir="${basedir}/gunit/src/">
 				<include name="**/*.java"/>
 				<include name="**/*.g"/>
 				<include name="**/*.st"/>
 				<include name="**/*.stg"/>
 			</fileset>
+			-->
         </copy>
 
         <copy todir="${install.root.dir}">