diff --git a/scripts/zshrc.sh b/scripts/zshrc.sh
index 8fec4f2..d26d664 100755
--- a/scripts/zshrc.sh
+++ b/scripts/zshrc.sh
@@ -315,7 +315,9 @@ ssh() {
 
 # SSH Tmux
 if [[ $- =~ i ]] && [[ -z "$TMUX" ]] && [[ -n "$SSH_TTY" ]]; then
-  tmux attach-session -t ssh_tmux || tmux new-session -s ssh_tmux
+  if command -v tmux >/dev/null 2>&1; then
+    tmux attach-session -t ssh_tmux || tmux new-session -s ssh_tmux
+  fi
 fi
 
 # Subtitle generation