diff --git a/js/src/xpconnect/tests/components/xpctest_module.cpp b/js/src/xpconnect/tests/components/xpctest_module.cpp
index 91cdfa73dbd..f8e49d5ac54 100644
--- a/js/src/xpconnect/tests/components/xpctest_module.cpp
+++ b/js/src/xpconnect/tests/components/xpctest_module.cpp
@@ -43,7 +43,9 @@
 
 // XXX progids need to be standardized!
 static nsModuleComponentInfo components[] = {
+#ifndef XPCONNECT_STANDALONE
   {nsnull, NS_ECHO_CID,                   "nsEcho",                 xpctest::ConstructEcho                  },
+#endif
   {nsnull, NS_CHILD_CID,                  "nsChild",                xpctest::ConstructChild                 },
   {nsnull, NS_NOISY_CID,                  "nsNoisy",                xpctest::ConstructNoisy                 },
   {nsnull, NS_STRING_TEST_CID,            "nsStringTest",           xpctest::ConstructStringTest            },