diff --git a/src/Init/Lean/Compiler/IR/UnboxResult.lean b/src/Init/Lean/Compiler/IR/UnboxResult.lean
index f29cad6559..818008c6f8 100644
--- a/src/Init/Lean/Compiler/IR/UnboxResult.lean
+++ b/src/Init/Lean/Compiler/IR/UnboxResult.lean
@@ -6,7 +6,6 @@ Authors: Leonardo de Moura
 prelude
 import Init.Lean.Data.Format
 import Init.Lean.Compiler.IR.Basic
-import Init.Lean.Compiler.IR.CtorLayout
 
 namespace Lean
 namespace IR