diff --git a/bots/modules/channel_helper.py b/bots/modules/channel_helper.py
index e45dc19..aa351a2 100644
--- a/bots/modules/channel_helper.py
+++ b/bots/modules/channel_helper.py
@@ -50,7 +50,7 @@ class ChannelHelperBotModuleConfig(TelegramBotModuleConfig):
 
         image_hash = imagehash.phash(im)
         if self.queued_items.filter(image_hash=image_hash, type='photo').count() > 0:
-            return False
+            raise RuntimeError('Duplicate')
 
         width, height = im.size
         if width > 2000 or height > 2000: