diff --git a/lib/cli.zsh b/lib/cli.zsh
index ba3e39eb5..561c1b98b 100644
--- a/lib/cli.zsh
+++ b/lib/cli.zsh
@@ -11,7 +11,7 @@ function omz {
 
   # Subcommand functions start with _ so that they don't
   # appear as completion entries when looking for `omz`
-  (( $+functions[_omz::$command] )) || {
+  (( ${+functions[_omz::$command]} )) || {
     _omz::help
     return 1
   }