diff --git a/Mathlib/Algebra/Ring/NegOnePow.lean b/Mathlib/Algebra/Ring/NegOnePow.lean
index 1de416d1d42c5a..194d23e68cc1a4 100644
--- a/Mathlib/Algebra/Ring/NegOnePow.lean
+++ b/Mathlib/Algebra/Ring/NegOnePow.lean
@@ -6,7 +6,6 @@ Authors: Joël Riou, Johan Commelin
 import Mathlib.Algebra.Ring.Int.Parity
 import Mathlib.Algebra.Ring.Int.Units
 import Mathlib.Data.ZMod.IntUnitsPower
-import Mathlib.Tactic.NormNum
 
 /-!
 # Integer powers of (-1)