diff --git a/mozilla/xpcom/proxy/src/nsProxyEventObject.cpp b/mozilla/xpcom/proxy/src/nsProxyEventObject.cpp
index 761e1c21f30..58bbf069666 100644
--- a/mozilla/xpcom/proxy/src/nsProxyEventObject.cpp
+++ b/mozilla/xpcom/proxy/src/nsProxyEventObject.cpp
@@ -255,6 +255,7 @@ nsProxyEventObject::CallMethod(PRUint16 methodIndex,
                 break;
             }
         }
+        rv = proxyInfo->GetResult();
     } else {
         NS_WARNING("Failed to dispatch nsProxyCallEvent");
     }