diff --git a/pkgs/by-name/gh/ghciwatch/package.nix b/pkgs/by-name/gh/ghciwatch/package.nix
index 55c66944929a..9fe7f3455ac3 100644
--- a/pkgs/by-name/gh/ghciwatch/package.nix
+++ b/pkgs/by-name/gh/ghciwatch/package.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
   cargoHash = "sha256-kH5YTadpaUXDma+7SfBJxrOIsd9Gm0EU3MfhFmQ3U80=";
 
   # integration tests are not run but the macros need this variable to be set
-  GHC_VERSIONS = "";
+  env.GHC_VERSIONS = "";
   checkFlags = "--test \"unit\"";
 
   meta = {