diff --git a/pkgs/by-name/fi/fishy/package.nix b/pkgs/by-name/fi/fishy/package.nix
index 302525450f3c..ec62305e8c4c 100644
--- a/pkgs/by-name/fi/fishy/package.nix
+++ b/pkgs/by-name/fi/fishy/package.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-F4zbalop1PEb381DctUIzdm3v71b6M/hnuw9BuIEkBU=";
 
-  OPENSSL_NO_VENDOR = 1;
+  env.OPENSSL_NO_VENDOR = 1;
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ openssl ];