diff --git a/4chan_x.user.js b/4chan_x.user.js
index 48149a363..f2859efd6 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -1854,7 +1854,7 @@
             return "image/" + type;
         }
       });
-      QR.mimeTypes = mimeTypes.split(', ');
+      QR.mimeTypes = mimeTypes.replace(/\s+/g, '').split(',');
       QR.mimeTypes.push('');
       fileInput = $('[type=file]', QR.el);
       fileInput.max = $('[name=MAX_FILE_SIZE]').value;
diff --git a/script.coffee b/script.coffee
index 36db6c35b..1bec8dac8 100644
--- a/script.coffee
+++ b/script.coffee
@@ -1415,7 +1415,7 @@ QR =
           'application/pdf'
         else
           "image/#{type}"
-    QR.mimeTypes = mimeTypes.split ', '
+    QR.mimeTypes = mimeTypes.replace(/\s+/g, '').split ','
     # Add empty mimeType to avoid errors with URLs selected in Window's file dialog.
     QR.mimeTypes.push ''
     fileInput        = $ '[type=file]', QR.el