diff --git a/system/options.nix b/system/options.nix
index 9144492a539..4249065239c 100644
--- a/system/options.nix
+++ b/system/options.nix
@@ -605,7 +605,7 @@ in
                start on started network-interfaces
                respawn
                env PATH=/var/run/current-system/sw/bin
-               exec sh -c "echo "hello world" | ${pkgs.netcat}/bin/nc -l -p 9000
+               exec sh -c "echo 'hello world' | ${pkgs.netcat}/bin/nc -l -p 9000"
                '';
            } ];
       description = "