diff --git a/b_asic/operation.py b/b_asic/operation.py
index 2f36b217240a4de44c0a424fffa8583fce62f906..fc007ffde91e596fc103e811677d7aab96241fa4 100644
--- a/b_asic/operation.py
+++ b/b_asic/operation.py
@@ -88,7 +88,7 @@ class Operation(GraphComponent):
     @abstractmethod
     def neighbors(self) -> "List[Operation]":
         """Return all operations that are connected by signals to this operation.
-        If no neighbors are found this returns an empty list
+        If no neighbors are found, this returns an empty list.
         """
         raise NotImplementedError