diff --git a/pkg/kubectl/cmd/completion.go b/pkg/kubectl/cmd/completion.go
index 4c5ed5cc62b..eb61a332db0 100644
--- a/pkg/kubectl/cmd/completion.go
+++ b/pkg/kubectl/cmd/completion.go
@@ -42,10 +42,11 @@ $ brew install bash-completion
 $ source $(brew --prefix)/etc/bash_completion
 $ source <(kubectl completion bash)
 
-If you use zsh, the following will load kubectl zsh completion:
+If you use zsh*, the following will load kubectl zsh completion:
 
 $ source <(kubectl completion zsh)
-`
+
+* zsh completions are only supported in versions of zsh >= 5.2`
 )
 
 var (