diff --git a/modules/programs/tmux.nix b/modules/programs/tmux.nix
index f3e30957..d11f016c 100644
--- a/modules/programs/tmux.nix
+++ b/modules/programs/tmux.nix
@@ -18,6 +18,7 @@ let
         --set __ETC_ZPROFILE_SOURCED  "" \
         --set __ETC_ZSHENV_SOURCED "" \
         --set __ETC_ZSHRC_SOURCED "" \
+        --set __NIX_DARWIN_SET_ENVIRONMENT_DONE "" \
         --add-flags -f --add-flags /etc/tmux.conf
     '';