diff --git a/build.xml b/build.xml
index 559e0eef..ef503ffd 100644
--- a/build.xml
+++ b/build.xml
@@ -359,7 +359,7 @@
 		<condition property="native_path" value="libs/macosx">
 			<os name="Mac OS X" />
 		</condition>
-		<java classname="${test.mainclass}" classpath="${lwjgl.lib}/lwjgl.jar:${lwjgl.lib}/lwjgl_util.jar:${lwjgl.lib}/lwjgl_test.jar:${lwjgl.lib}/jinput.jar" fork="true">
+		<java classname="${test.mainclass}" classpath="res:${lwjgl.lib}/lwjgl.jar:${lwjgl.lib}/lwjgl_util.jar:${lwjgl.lib}/lwjgl_test.jar:${lwjgl.lib}/jinput.jar" fork="true">
 			<jvmarg value="-Dorg.lwjgl.util.Debug=true"/>
 			<jvmarg value="-Djava.library.path=${native_path}"/>
 		</java>