diff --git a/karton/core/task.py b/karton/core/task.py
index f24824a..51cba9a 100644
--- a/karton/core/task.py
+++ b/karton/core/task.py
@@ -242,7 +242,7 @@ def matches_filters(self, filters: List[Dict[str, Any]]) -> bool:
 
             # set the flag if all consumer filter fields match the task header.
             # It will be set to True only if at least one filter matches the header
-            matches |= all(m for m in matched)
+            matches |= all(matched)
 
         return matches