diff --git a/yaboli/utils.py b/yaboli/utils.py
index 6206560..0f81076 100644
--- a/yaboli/utils.py
+++ b/yaboli/utils.py
@@ -157,7 +157,7 @@ class Listing:
 		self._sessions.pop(session_id)
 	
 	def remove_combo(self, server_id, server_era):
-		self._sessions = {i: ses for i, ses in self._sessions.items
+		self._sessions = {i: ses for i, ses in self._sessions.items()
 		                  if ses.server_id != server_id and ses.server_era != server_era}
 	
 	def by_sid(self, session_id):