diff --git a/pkgs/by-name/mh/mhost/package.nix b/pkgs/by-name/mh/mhost/package.nix
index ef08dc884b0f..48364f3abca1 100644
--- a/pkgs/by-name/mh/mhost/package.nix
+++ b/pkgs/by-name/mh/mhost/package.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
 
   cargoHash = "sha256-08pvkBa2PD7/uko1OOBg6/dCcOM3z9Cp//8mylFCMcE=";
 
-  CARGO_CRATE_NAME = "mhost";
+  env.CARGO_CRATE_NAME = "mhost";
 
   doCheck = false;