diff --git a/build.xml b/build.xml
index e4b0641f9..883916a5e 100644
--- a/build.xml
+++ b/build.xml
@@ -395,12 +395,9 @@
     <available property="commons.net.present"
       classname="org.apache.commons.net.ftp.FTPClient"
       classpathref="classpath"/>
-    <condition property="antlr.present">
-  	  <or>
-  	    <available classname="org.antlr.Tool" classpathref="classpath"/>
-  	    <available classname="antlr.Tool" classpathref="classpath"/>
-      </or>
-  	</condition>
+    <available property="antlr.present" 
+      classname="antlr.Tool" 
+      classpathref="classpath"/>
     <available property="stylebook.present"
       classname="org.apache.stylebook.Engine"
       classpathref="classpath"/>