diff --git a/nix/ihaskell-overlay.nix b/nix/ihaskell-overlay.nix
index 17d34f1f..160fadba 100644
--- a/nix/ihaskell-overlay.nix
+++ b/nix/ihaskell-overlay.nix
@@ -2,7 +2,6 @@
 , haskell
 , lib
 
-, compiler
 , enableHlint
 }:
 
diff --git a/nix/release.nix b/nix/release.nix
index 76ace720..38f9ef93 100644
--- a/nix/release.nix
+++ b/nix/release.nix
@@ -27,7 +27,7 @@ extraEnvironmentBinaries ? []
 }:
 
 let
-  ihaskellOverlay = callPackage ./ihaskell-overlay.nix { inherit compiler enableHlint; };
+  ihaskellOverlay = callPackage ./ihaskell-overlay.nix { inherit enableHlint; };
 
   # Haskell packages set with IHaskell packages added
   haskellPackages = haskell.packages."${compiler}".override (old: {