diff --git a/4chan_x.user.js b/4chan_x.user.js
index d4edfc025..4b78c72ad 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -4160,10 +4160,13 @@
         }
         url = "//images.4chan.org/" + src[3] + "/src/" + src[5] + "?" + (Date.now());
       }
+      if ($.engine !== 'webkit' && url.split('/')[2] === 'images.4chan.org') {
+        return;
+      }
       timeoutID = setTimeout((function() {
         return _this.src = url;
       }), 3000);
-      if (!($.engine === 'webkit' && src[2] === 'images.4chan.org')) {
+      if ($.engine !== 'webkit' || url.split('/')[2] !== 'images.4chan.org') {
         return;
       }
       return $.ajax(url, {
@@ -4345,8 +4348,11 @@
         }
         url = "//images.4chan.org/" + src[3] + "/src/" + src[5] + "?" + (Date.now());
       }
+      if ($.engine !== 'webkit' && url.split('/')[2] === 'images.4chan.org') {
+        return;
+      }
       timeoutID = setTimeout(ImageExpand.expand, 10000, thumb, url);
-      if (!($.engine === 'webkit' && url.split('/')[2] === 'images.4chan.org')) {
+      if ($.engine !== 'webkit' || url.split('/')[2] !== 'images.4chan.org') {
         return;
       }
       return $.ajax(url, {
diff --git a/script.coffee b/script.coffee
index 72085076b..8d6bd53c1 100644
--- a/script.coffee
+++ b/script.coffee
@@ -3228,14 +3228,13 @@ ImageHover =
     src = @src.replace(/\?\d+$/, '').split '/'
     unless src[2] is 'images.4chan.org' and url = Redirect.image src[3], src[5]
       return if g.dead
-      # CloudFlare may cache banned pages instead of images.
       # This will fool CloudFlare's cache.
       url = "//images.4chan.org/#{src[3]}/src/#{src[5]}?#{Date.now()}"
-    # navigator.online is not x-browser/os yet
+    return if $.engine isnt 'webkit' and url.split('/')[2] is 'images.4chan.org'
     timeoutID = setTimeout (=> @src = url), 3000
-    # Only Chrome let userscript break through cross domain requests.
-    # Don't check it 404s in the archivers.
-    return unless $.engine is 'webkit' and src[2] is 'images.4chan.org'
+    # Only Chrome let userscripts do cross domain requests.
+    # Don't check for 404'd status in the archivers.
+    return if $.engine isnt 'webkit' or url.split('/')[2] isnt 'images.4chan.org'
     $.ajax url, onreadystatechange: (-> clearTimeout timeoutID if @status is 404),
       type: 'head'
   mouseout: ->
@@ -3349,14 +3348,13 @@ ImageExpand =
     src = @src.replace(/\?\d+$/, '').split '/'
     unless src[2] is 'images.4chan.org' and url = Redirect.image src[3], src[5]
       return if g.dead
-      # CloudFlare may cache banned pages instead of images.
       # This will fool CloudFlare's cache.
       url = "//images.4chan.org/#{src[3]}/src/#{src[5]}?#{Date.now()}"
-    #navigator.online is not x-browser/os yet
+    return if $.engine isnt 'webkit' and url.split('/')[2] is 'images.4chan.org'
     timeoutID = setTimeout ImageExpand.expand, 10000, thumb, url
-    # Only Chrome let userscript break through cross domain requests.
-    # Don't check it 404s in the archivers.
-    return unless $.engine is 'webkit' and url.split('/')[2] is 'images.4chan.org'
+    # Only Chrome let userscripts do cross domain requests.
+    # Don't check for 404'd status in the archivers.
+    return if $.engine isnt 'webkit' or url.split('/')[2] isnt 'images.4chan.org'
     $.ajax url, onreadystatechange: (-> clearTimeout timeoutID if @status is 404),
       type: 'head'