diff --git a/pkgs/by-name/pr/prisma-engines_6/package.nix b/pkgs/by-name/pr/prisma-engines_6/package.nix
index 19c9c3db7ec4..c49edabc8d2d 100644
--- a/pkgs/by-name/pr/prisma-engines_6/package.nix
+++ b/pkgs/by-name/pr/prisma-engines_6/package.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-PgCfBcmK9RCA5BMacJ5oYEpo2DnBKx2xPbdLb79yCCY=";
 
   # Use system openssl.
-  OPENSSL_NO_VENDOR = 1;
+  env.OPENSSL_NO_VENDOR = 1;
 
   nativeBuildInputs = [ pkg-config ];