diff --git a/templates/python39/shell.nix b/templates/python39/shell.nix
index 5b62f0fd..23028e5f 100644
--- a/templates/python39/shell.nix
+++ b/templates/python39/shell.nix
@@ -3,7 +3,7 @@ pkgs.mkShell {
   nativeBuildInputs = with pkgs; [python39 poetry git];
   shellHook = ''
     export PROJECT_NAME=$(basename $(readlink -f .))
-    [ -e .venv/bin/python3 ] && VENV_FLAG="--upgrade" || VENV_FLAG="--clear --prompt $PROJECT_NAME"; python3 -m venv $VENV_FLAG .venv
+    [ -e .venv/bin/python3 ] && VENV_FLAG="--upgrade" || VENV_FLAG="--clear"; python3 -m venv --prompt $PROJECT_NAME $VENV_FLAG .venv
     [ -e .venv/bin/activate ] && source .venv/bin/activate
   '';
 }