diff --git a/script/tmuxsess b/script/tmuxsess
index 7ddc12c..7ad27e6 100755
--- a/script/tmuxsess
+++ b/script/tmuxsess
@@ -9,7 +9,7 @@ set -e
 
 if [ -z "$1" ]; then
   cwd=$(pwd)
-  sessionname=$(basename "$cwd")
+  sessionname=$(basename "$cwd" | tr .: _)
 else
   sessionname="$1"
 fi
@@ -28,7 +28,6 @@ if [ $exitcode -ne 0 ]; then
   exit $exitcode
 fi
 
-# TODO: fix sessionname containing full stop which are renamed by tmux
 tmux rename-window -t "$sessionname:1" cli
 tmux new-window -t "$sessionname" -n vim zsh -ic nvim
 tmux select-window -t "$sessionname:1"