diff --git a/python/flake.nix b/python/flake.nix
index a40d442..0a11136 100644
--- a/python/flake.nix
+++ b/python/flake.nix
@@ -14,7 +14,7 @@
           ]);
           cfg = ./mypy-config.ini;
       in rec {
-        packages.tychk-watch = pkgs.writeScriptBin "tychk" "echo 'running mypy on change...' ; ${pkgs.watchexec}/bin/watchexec -e py ${python}/bin/mypy --config ${cfg} ${./.}";
+        packages.tychk-watch = pkgs.writeScriptBin "tychk" "echo 'running mypy on change...' ; ${pkgs.watchexec}/bin/watchexec -e py ${python}/bin/mypy --config ${cfg} .";
         packages.tychk = pkgs.writeScriptBin "tychk" "${python}/bin/mypy ${./.} --config ${cfg}";
         devShells.default = pkgs.mkShell {
           packages = [ python ];