diff --git a/pkgs/by-name/ru/rumdl/package.nix b/pkgs/by-name/ru/rumdl/package.nix
index 1449a2fc2e5f..ea8c176ef06f 100644
--- a/pkgs/by-name/ru/rumdl/package.nix
+++ b/pkgs/by-name/ru/rumdl/package.nix
@@ -32,7 +32,8 @@ rustPlatform.buildRustPackage (finalAttrs: {
 
   cargoTestFlags = [
     # Prefer the "smoke" profile over "ci" to exclude flaky tests: https://github.com/rvben/rumdl/pull/341
-    "--profile smoke"
+    "--profile"
+    "smoke"
   ];
 
   doInstallCheck = true;