diff --git a/includes/file.inc b/includes/file.inc
index 2972699df048a6b4ce6c61e070d1aff291422995..b14c5b9758e12a03da1b86f630a0dbf581c3f03b 100644
--- a/includes/file.inc
+++ b/includes/file.inc
@@ -459,6 +459,7 @@ function file_create_filename($basename, $directory) {
     }
     else {
       $name = $basename;
+      $ext = '';
     }
 
     $counter = 0;