diff --git a/mozilla/xpcom/io/nsLocalFileCommon.cpp b/mozilla/xpcom/io/nsLocalFileCommon.cpp
index 05130b62738..47e30ac4a73 100644
--- a/mozilla/xpcom/io/nsLocalFileCommon.cpp
+++ b/mozilla/xpcom/io/nsLocalFileCommon.cpp
@@ -65,7 +65,7 @@ nsLocalFile::InitWithFile(nsILocalFile *aFile)
     nsCAutoString path;
     aFile->GetNativePath(path);
     if (path.IsEmpty())
-        return NS_ERROR_FAILURE;
+        return NS_ERROR_INVALID_ARG;
     return InitWithNativePath(path); 
 }
 #endif