diff --git a/src/controller/mainController.py b/src/controller/mainController.py
index 6aa979b..5a296cf 100644
--- a/src/controller/mainController.py
+++ b/src/controller/mainController.py
@@ -488,7 +488,7 @@ class Controller(object):
 	def mark_as_read(self):
 		for i in self.buffers:
 			if hasattr(i, "reads") and len(i.reads) != 0:
-				response = self.session.vk.client.messages.markAsRead(peer_id=i.kwargs["user_id"])
+				response = self.session.vk.client.messages.markAsRead(peer_id=i.kwargs["peer_id"])
 				i.clear_reads()
 				i.reads = []
 				time.sleep(1)