diff --git a/js/src/xpconnect/loader/mozJSComponentLoader.cpp b/js/src/xpconnect/loader/mozJSComponentLoader.cpp
index 122373a5fe84..7296fc19ba6d 100644
--- a/js/src/xpconnect/loader/mozJSComponentLoader.cpp
+++ b/js/src/xpconnect/loader/mozJSComponentLoader.cpp
@@ -862,8 +862,8 @@ PathifyURI(nsIURI *in, nsACString &out)
    NS_ENSURE_SUCCESS(rv, rv);
    out.Append(scheme);
    nsCAutoString host;
-   rv = in->GetHost(host);
-   NS_ENSURE_SUCCESS(rv, rv);
+   // OK for GetHost to fail since it's not implemented sometimes
+   in->GetHost(host);
 #ifdef MOZ_OMNIJAR
    if (scheme.Equals("resource") && host.Length() == 0){
        host = "gre";