diff -r 197eb93560b3 -r 501d48bda912 Makefile
--- a/Makefile	Fri May 26 20:03:05 2017 -0400
+++ b/Makefile	Fri May 26 13:24:07 2017 -0700
@@ -170,7 +170,7 @@
         # install zsh completions - this location appears to be
         # searched by default as of macOS Sierra.
 	install -d build/mercurial/usr/local/share/zsh/site-functions/
-	install -m 0644 contrib/zsh_completion build/mercurial/usr/local/share/zsh/site-functions/hg
+	install -m 0644 contrib/zsh_completion build/mercurial/usr/local/share/zsh/site-functions/_hg
         # install bash completions - there doesn't appear to be a
         # place that's searched by default for bash, so we'll follow
         # the lead of Apple's git install and just put it in a