diff --git a/src/site/SW.tinyboard.coffee b/src/site/SW.tinyboard.coffee
index de4877d3c..5830a4f0c 100644
--- a/src/site/SW.tinyboard.coffee
+++ b/src/site/SW.tinyboard.coffee
@@ -119,7 +119,7 @@ SW.tinyboard =
       dimensions: info[0].match(/\d+x\d+/)?[0]
     if thumb
       $.extend file,
-        thumbURL:  if '/static/' in thumb.src then link.href else thumb.src
+        thumbURL:  if /\/static\//.test(thumb.src) and /\.(?:gif|jpe?g|png)$/.test(link.href) then link.href else thumb.src
         isSpoiler: !!info[1] or link.textContent is 'Spoiler Image'
     true