diff --git a/Tools/Utilities/file.js b/Tools/Utilities/file.js
index c8461a7ab..990e37e33 100644
--- a/Tools/Utilities/file.js
+++ b/Tools/Utilities/file.js
@@ -41,7 +41,7 @@ function importFiles(files, aCallback)
         if (typeof file === "string")
             file = new File(file);
         
-        objj_import(file.getCanonicalPath(), YES, function() { importFiles(files, aCallback) });
+        objj_import(String(file.getCanonicalPath()), YES, function() { importFiles(files, aCallback) });
     }
         return;