diff --git a/netwerk/ipc/NeckoMessageUtils.h b/netwerk/ipc/NeckoMessageUtils.h
index bdebb547a63a..e1eca945dfc6 100644
--- a/netwerk/ipc/NeckoMessageUtils.h
+++ b/netwerk/ipc/NeckoMessageUtils.h
@@ -84,9 +84,10 @@ struct ParamTraits<URI>
     if (!serializable) {
       nsCString scheme;
       aParam.mURI->GetScheme(scheme);
-      NS_ABORT_IF_FALSE(scheme.EqualsASCII("about:") ||
-                        scheme.EqualsASCII("javascript:"),
-                        "All IPDL URIs must be serializable or an allowed scheme");
+      if (!scheme.EqualsASCII("about:") &&
+          !scheme.EqualsASCII("javascript:") &&
+          !scheme.EqualsASCII("javascript"))
+        NS_WARNING("All IPDL URIs must be serializable or an allowed scheme");
     }
     
     bool isSerialized = !!serializable;