diff --git a/src/main/java/com/rometools/modules/thr/ThreadingModuleImpl.java b/src/main/java/com/rometools/modules/thr/ThreadingModuleImpl.java
index 1bd634a..e0a44c3 100644
--- a/src/main/java/com/rometools/modules/thr/ThreadingModuleImpl.java
+++ b/src/main/java/com/rometools/modules/thr/ThreadingModuleImpl.java
@@ -35,6 +35,7 @@ public class ThreadingModuleImpl extends ModuleImpl implements ThreadingModule {
             setHref(module.getHref());
             setRef(module.getRef());
             setType(module.getType());
+            setSource(module.getSource());
         }
     }