diff --git a/b_asic/core_operations.py b/b_asic/core_operations.py
index bb73ecb93b6a3bf4e48c79029b9170a07b9af591..9668fd99dd6343bf9450d6432272d6c9e9447a78 100644
--- a/b_asic/core_operations.py
+++ b/b_asic/core_operations.py
@@ -1301,7 +1301,7 @@ class Sink(AbstractOperation):
         return self.latency_offsets["in0"]
 
     def __repr__(self) -> str:
-        return f"Sink()"
+        return "Sink()"
 
     def __str__(self) -> str:
-        return f"sink"
+        return "sink"