diff --git a/pkgs/development/lua-modules/lux-lua.nix b/pkgs/development/lua-modules/lux-lua.nix
index 2f9d5ba9e04d..316cdc021e31 100644
--- a/pkgs/development/lua-modules/lux-lua.nix
+++ b/pkgs/development/lua-modules/lux-lua.nix
@@ -80,7 +80,9 @@ toLuaModule (
       runHook postInstall
     '';
 
-    cargoTestFlags = "--lib"; # Disable impure integration tests
+    cargoTestFlags = [
+      "--lib" # Disable impure integration tests
+    ];
 
     meta = {
       description = "Lua API for the Lux package manager";