diff --git a/zsh/alias b/zsh/alias
index 02fbe86..8f8f678 100644
--- a/zsh/alias
+++ b/zsh/alias
@@ -7,7 +7,7 @@ if [[ -x $(which brew) ]]; then
 	alias brewupdate='brew update; brew upgrade; brew upgrade --cask; brew cleanup'
 fi
 
-if [[ $platform == 'Linux' ]]; then
+if [[ -x $(which apt) ]]; then
 	alias aptupdate='sudo apt update && sudo apt upgrade -y && sudo apt autoremove -y && sudo apt clean'
 fi