diff --git a/includes/path.inc b/includes/path.inc
index bc11198b426bffe830e3ce7dd67c1d8a727b238c..557503e1f11921d80b03a12298d94bc9525c4d8f 100644
--- a/includes/path.inc
+++ b/includes/path.inc
@@ -71,6 +71,9 @@ function drupal_lookup_path($action, $path = '') {
           $map[$src] = $path;
           return $src;
         }
+        else {
+          $map[$path] = $path;
+        }
       }
     }
   }