diff --git a/dotfiles/xinitrc b/dotfiles/xinitrc
index 64e9db0..9faf2af 100644
--- a/dotfiles/xinitrc
+++ b/dotfiles/xinitrc
@@ -38,7 +38,7 @@ if [ -d /etc/X11/xinit/xinitrc.d ] ; then
     unset f
 fi
 
-if which numlockx; then
+if command -v numlockx; then
     numlockx &
 fi