diff --git a/Mathlib/Algebra/CharZero/Defs.lean b/Mathlib/Algebra/CharZero/Defs.lean
index 8f2cf74d4cef2..c82356e6fa6e7 100644
--- a/Mathlib/Algebra/CharZero/Defs.lean
+++ b/Mathlib/Algebra/CharZero/Defs.lean
@@ -4,7 +4,6 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Mario Carneiro
 -/
 import Mathlib.Data.Int.Cast.Defs
-import Mathlib.Algebra.NeZero
 import Mathlib.Logic.Function.Basic
 
 /-!
diff --git a/Mathlib/Algebra/Order/ZeroLEOne.lean b/Mathlib/Algebra/Order/ZeroLEOne.lean
index ecd0e356d73ad..538c8f6985b42 100644
--- a/Mathlib/Algebra/Order/ZeroLEOne.lean
+++ b/Mathlib/Algebra/Order/ZeroLEOne.lean
@@ -4,7 +4,6 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Jeremy Avigad, Leonardo de Moura, Mario Carneiro, Johannes Hölzl
 -/
 import Mathlib.Order.Basic
-import Mathlib.Algebra.NeZero
 
 /-!
 # Typeclass expressing `0 ≤ 1`.
diff --git a/Mathlib/Data/Nat/Bitwise.lean b/Mathlib/Data/Nat/Bitwise.lean
index d04abc89e9c53..d57eb4da599b5 100644
--- a/Mathlib/Data/Nat/Bitwise.lean
+++ b/Mathlib/Data/Nat/Bitwise.lean
@@ -9,6 +9,7 @@ import Mathlib.Algebra.Ring.Nat
 import Mathlib.Order.Basic
 import Mathlib.Tactic.AdaptationNote
 import Mathlib.Tactic.Common
+import Mathlib.Algebra.NeZero
 
 /-!
 # Bitwise operations on natural numbers
diff --git a/Mathlib/Data/Nat/Cast/NeZero.lean b/Mathlib/Data/Nat/Cast/NeZero.lean
index d49f78b3b3095..c3f00eb8b8820 100644
--- a/Mathlib/Data/Nat/Cast/NeZero.lean
+++ b/Mathlib/Data/Nat/Cast/NeZero.lean
@@ -4,7 +4,6 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Mario Carneiro, Gabriel Ebner
 -/
 import Mathlib.Data.Nat.Cast.Defs
-import Mathlib.Algebra.NeZero
 
 /-!
 # Lemmas about nonzero elements of an `AddMonoidWithOne`
diff --git a/Mathlib/Data/PNat/Defs.lean b/Mathlib/Data/PNat/Defs.lean
index 3004d33fc9df7..6eb644184ac56 100644
--- a/Mathlib/Data/PNat/Defs.lean
+++ b/Mathlib/Data/PNat/Defs.lean
@@ -3,7 +3,6 @@ Copyright (c) 2017 Microsoft Corporation. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Mario Carneiro, Neil Strickland
 -/
-import Mathlib.Algebra.NeZero
 import Mathlib.Data.Nat.Defs
 import Mathlib.Order.Basic
 import Mathlib.Order.TypeTags