diff --git a/bots/modules/channel_helper.py b/bots/modules/channel_helper.py
index 776ecd6..01e4fff 100644
--- a/bots/modules/channel_helper.py
+++ b/bots/modules/channel_helper.py
@@ -56,7 +56,7 @@ class ChannelHelperBotModuleConfig(TelegramBotModuleConfig):
         im = Image.open(f)  # type: Image.Image
 
         image_hash = imagehash.phash(im)
-        if self.queued_items.filter(image_hash=image_hash, type='photo').count() > 0:
+        if self.queued_items.filter(image_hash=str(image_hash), type='photo').count() > 0:
             return 'duplicate'
 
         width, height = im.size
@@ -72,7 +72,7 @@ class ChannelHelperBotModuleConfig(TelegramBotModuleConfig):
         # else:
         #     bot.send_photo(self.chat_id, open(fpath, 'rb'))
         #     QueuedItem.objects.create(config=self, type='photo', args=json.dumps([]), image_hash=image_hash, processed=True)
-        return image_hash
+        return str(image_hash)
 
     def rpc_post_gif(self, url, note=''):
         config._reload_maybe()