diff --git a/pkgs/by-name/po/postman/darwin.nix b/pkgs/by-name/po/postman/darwin.nix
index e14ad072e574..6eeb1104f6d3 100644
--- a/pkgs/by-name/po/postman/darwin.nix
+++ b/pkgs/by-name/po/postman/darwin.nix
@@ -50,7 +50,7 @@ stdenvNoCC.mkDerivation {
     cp -R . $out/Applications/${appName}
     cat > $out/bin/${pname} << EOF
     #!${stdenvNoCC.shell}
-    open -na $out/Applications/${appName} --args "$@"
+    open -na $out/Applications/${appName} --args "\$@"
     EOF
     chmod +x $out/bin/${pname}
     runHook postInstall