diff --git a/contrib/completion/git-completion.zsh b/contrib/completion/git-completion.zsh
index 4577502..4aeda2a 100644
--- a/contrib/completion/git-completion.zsh
+++ b/contrib/completion/git-completion.zsh
@@ -75,4 +75,5 @@ _git ()
 	return _ret
 }
 
-_git
+autoload -U +X compinit && compinit
+compdef _git git gitk