diff --git a/builds/4chan-X.user.js b/builds/4chan-X.user.js
index 5da9402c1..bf0efbde9 100644
--- a/builds/4chan-X.user.js
+++ b/builds/4chan-X.user.js
@@ -6362,6 +6362,9 @@
     },
     checkDimensions: function(file, isSingle, max) {
       var img;
+      if (file.type === 'application/x-shockwave-flash') {
+        return QR.handleFile(file, isSingle, max);
+      }
       img = new Image();
       img.onload = (function(_this) {
         return function() {
diff --git a/builds/crx/script.js b/builds/crx/script.js
index 9b63ae070..ecb3f514f 100644
--- a/builds/crx/script.js
+++ b/builds/crx/script.js
@@ -6418,6 +6418,9 @@
     },
     checkDimensions: function(file, isSingle, max) {
       var img;
+      if (file.type === 'application/x-shockwave-flash') {
+        return QR.handleFile(file, isSingle, max);
+      }
       img = new Image();
       img.onload = (function(_this) {
         return function() {
diff --git a/src/Posting/QR.coffee b/src/Posting/QR.coffee
index 40bc1d30e..fad8f05e7 100644
--- a/src/Posting/QR.coffee
+++ b/src/Posting/QR.coffee
@@ -372,6 +372,7 @@ QR =
     $.addClass QR.nodes.el, 'dump' unless isSingle
 
   checkDimensions: (file, isSingle, max) ->
+    return QR.handleFile(file, isSingle, max) if file.type is 'application/x-shockwave-flash'
     img = new Image()
     img.onload = =>
       {height, width} = img