diff --git a/pkgs/by-name/dy/dynein/package.nix b/pkgs/by-name/dy/dynein/package.nix
index 23f9347d6c6e..c770f2f8dcab 100644
--- a/pkgs/by-name/dy/dynein/package.nix
+++ b/pkgs/by-name/dy/dynein/package.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
   };
 
   # Use system openssl.
-  OPENSSL_NO_VENDOR = 1;
+  env.OPENSSL_NO_VENDOR = 1;
 
   cargoHash = "sha256-PA7Hvn+vYBD80thkIamwOhw4lJWAmU/TQBnwJro4r7c=";