diff --git a/.config/fish/config.fish b/.config/fish/config.fish
index 798cd62..a2c220b 100644
--- a/.config/fish/config.fish
+++ b/.config/fish/config.fish
@@ -9,12 +9,12 @@ if status is-interactive
 
   jj util completion fish | source
   
-  # # start or attach to default tmux session
-  # if not set -q TMUX
-  #   set -g TMUX tmux new-session -d -s default
-  #   eval $TMUX
-  #   tmux attach-session -d -t default
-  # end
+  # start or attach to default tmux session
+  if not set -q TMUX
+    set -g TMUX tmux new-session -d -s default
+    eval $TMUX
+    tmux attach-session -d -t default
+  end
 end
 
 set -xg SSH_AUTH_SOCK ~/Library/Group\ Containers/2BUA8C4S2C.com.1password/t/agent.sock