diff --git a/lib/termsupport.zsh b/lib/termsupport.zsh
index e1c2e2f93..975788701 100644
--- a/lib/termsupport.zsh
+++ b/lib/termsupport.zsh
@@ -13,9 +13,9 @@ function title {
   # if it is set and empty, leave it as is
   : ${2=$1}
 
-  if [[ "$TERM" == screen* ]]; then
+  if [[ "$TERM" == screen* ]] && [[ -z $TMUX ]]; then
     print -Pn "\ek$1:q\e\\" #set screen hardstatus, usually truncated at 20 chars
-  elif [[ "$TERM" == xterm* ]] || [[ "$TERM" == rxvt* ]] || [[ "$TERM" == ansi ]] || [[ "$TERM_PROGRAM" == "iTerm.app" ]]; then
+  elif [[ "$TERM" == xterm* ]] || [[ "$TERM" == rxvt* ]] || [[ "$TERM" == ansi ]] || [[ "$TERM_PROGRAM" == "iTerm.app" ]] || [[ -n $TMUX ]]; then
     print -Pn "\e]2;$2:q\a" #set window name
     print -Pn "\e]1;$1:q\a" #set icon (=tab) name
   fi