diff --git a/docs/book/src/quick-start.md b/docs/book/src/quick-start.md
index 010f4ecbabf..09c6b08d968 100644
--- a/docs/book/src/quick-start.md
+++ b/docs/book/src/quick-start.md
@@ -45,7 +45,7 @@ You can work with a master snapshot by installing from `https://go.kubebuilder.i
diff --git a/docs/book/src/reference/completion.md b/docs/book/src/reference/completion.md
index 4e15dca47c6..4b94060e804 100644
--- a/docs/book/src/reference/completion.md
+++ b/docs/book/src/reference/completion.md
@@ -1,5 +1,5 @@
# Enabling shell autocompletion
-The Kubebuilder completion script can be generated with the command `kubebuilder completion [bash|zsh|powershell]`.
+The Kubebuilder completion script can be generated with the command `kubebuilder completion [bash|fish|powershell|zsh]`.
Note that sourcing the completion script in your shell enables Kubebuilder autocompletion.