diff --git a/inc/lib/webm/posthandler.php b/inc/lib/webm/posthandler.php
index 308c7507..a5b7429b 100644
--- a/inc/lib/webm/posthandler.php
+++ b/inc/lib/webm/posthandler.php
@@ -21,7 +21,7 @@ function postHandler($post) {
             $file = set_thumbnail_dimensions($post, $file);
             $tn_path = $board['dir'] . $config['dir']['thumb'] . $file->file_id . '.jpg';
 
-            if(empty(make_webm_thumbnail($file->file_path, $tn_path, $file->thumbwidth, $file->thumbheight))) {
+            if(false == make_webm_thumbnail($file->file_path, $tn_path, $file->thumbwidth, $file->thumbheight)) {
               $file->thumb = $file->file_id . '.jpg';
             }
             else {