diff --git a/library/attach_mod/includes/functions_thumbs.php b/library/attach_mod/includes/functions_thumbs.php
index 3a24639f..bb147a3d 100644
--- a/library/attach_mod/includes/functions_thumbs.php
+++ b/library/attach_mod/includes/functions_thumbs.php
@@ -123,6 +123,8 @@ function create_thumbnail($source, $new_file, $mimetype)
 
 		if ($type['gd'])
 		{
+			$image = '';
+
 			switch ($type['format'])
 			{
 				case IMG_GIF: