diff --git a/dot_zshrc b/dot_zshrc
index 0f350e2..8352015 100644
--- a/dot_zshrc
+++ b/dot_zshrc
@@ -1,6 +1,6 @@
 # Documentation: https://github.com/romkatv/zsh4humans/blob/v5/README.md
 # tmux: integrated, system, no
-#zstyle ':z4h:' start-tmux 'no'
+zstyle ':z4h:' start-tmux 'no'
 
 # keyboard setting
 zstyle ':z4h:bindkey' keyboard 'pc'