diff --git a/bin/a-activate b/bin/a-activate
index cf921a7..3866ec9 100755
--- a/bin/a-activate
+++ b/bin/a-activate
@@ -4,6 +4,8 @@
 ###
 # Note, you should source these, not execute this script
 # This stuff has been tried on zsh, but should work on bash.
+# There are other commands that use zsh, though, so you should
+# probably install it.
 ###
 
 if [ -n "$BASH_VERSION" ]; then