diff --git a/config/zsh/interactive/aliases b/config/zsh/interactive/aliases
index a1e1028..16498f3 100644
--- a/config/zsh/interactive/aliases
+++ b/config/zsh/interactive/aliases
@@ -1,17 +1,17 @@
 #! zsh
-alias has_command='whence >/dev/null'
-alias ls="ls -F --color=auto"
-alias lsl="ls -lh"
-alias grep="grep --color=auto"
-alias egrep="egrep --color=auto"
-alias pseudo="sudo"
-if has_command xdg-open; then
-	alias ]='xdg-open'
+alias ls='ls -F --color=auto'
+alias lsl='ls -lh'
+alias grep='grep --color=auto'
+alias egrep='egrep --color=auto'
+alias pseudo=sudo
+if (( $+commands[xdg-open] )); then
+	alias ]=xdg-open
 else
-	alias ]='open'
+	alias ]=open
 fi
+alias cdu=cd-gitroot
 
 # make sure ELinks can detect when it's in tmux
 alias elinks="STY= elinks"
 
-has_command hub && alias git=hub
+(( $+commands[hub] )) && alias git=hub