diff --git a/grudge/symbolic/operators.py b/grudge/symbolic/operators.py
index 739e7b6cd39af4f5d98a88f40b3b21b414f9d564..c4f6ed659613006337d82bf6e1e477437f2642e0 100644
--- a/grudge/symbolic/operators.py
+++ b/grudge/symbolic/operators.py
@@ -416,7 +416,6 @@ class OppositeInteriorFaceSwap(Operator):
         if self.dd_out != self.dd_in:
             raise ValueError("dd_out and dd_in must be identical")
 
-
     mapper_method = intern("map_opposite_interior_face_swap")