diff --git a/src/java/com/threerings/presents/tools/GenTask.java b/src/java/com/threerings/presents/tools/GenTask.java
index e9d61d1e0..7a1f1cca0 100644
--- a/src/java/com/threerings/presents/tools/GenTask.java
+++ b/src/java/com/threerings/presents/tools/GenTask.java
@@ -71,7 +71,7 @@ public abstract class GenTask extends Task
     /** Configures our classpath which we'll use to load service classes. */
     public void setClasspathref (Reference pathref)
     {
-        _cloader = ClasspathUtils.getClassLoaderForPath(getProject(), pathref);
+        _cloader = ClasspathUtils.getClassLoaderForPath(getProject(), pathref, true);
 
         // set the parent of the classloader to be the classloader used to load this task, rather
         // than the classloader used to load Ant, so that we have access to Narya classes like