diff --git a/nixos/tests/munin.nix b/nixos/tests/munin.nix
index ddbac590143f..d18abd68ee0e 100644
--- a/nixos/tests/munin.nix
+++ b/nixos/tests/munin.nix
@@ -18,8 +18,8 @@ import ./make-test.nix {
              '';
            };
           };
+          systemd.services.munin-node.unitConfig.TimeoutSec = 240;
         };
-      systemd.services.munin-node.unitConfig.TimeoutSec = 240;
     };
 
   testScript = ''