diff --git a/zsh/commands b/zsh/commands
index 3c93985..ff0a9aa 100644
--- a/zsh/commands
+++ b/zsh/commands
@@ -27,7 +27,8 @@ whothefuckisusingport() {
 # functions
 
 function tm() {
-	NUM="$(\tmux ls 2>/dev/null|wc -l)"
+	OUT="$(\tmux ls 2>/dev/null)"
+	NUM="$(echo "$OUT" | wc -l)"
 	if [ "$NUM" -eq 0 ] ; then
 		\tmux -2
 	elif [ "$NUM" -eq 1 ] ; then