diff --git a/install.sh b/install.sh
index f5623953..c28479be 100755
--- a/install.sh
+++ b/install.sh
@@ -584,7 +584,7 @@ install_theme() {
     done
   done
 
-  if (which xfce4-popup-whiskermenu 2> /dev/null); then
+  if has_command xfce4-popup-whiskermen; then
     sed -i "s|.*menu-opacity=.*|menu-opacity=0|" "$HOME/.config/xfce4/panel/whiskermenu"*".rc"
   fi