diff --git a/adding-an-APIGroup.md b/adding-an-APIGroup.md
index 6026cc2e4..63c4e2a2d 100644
--- a/adding-an-APIGroup.md
+++ b/adding-an-APIGroup.md
@@ -77,8 +77,8 @@ cmd/libs/go2idl/ tool.
     1. Add your "group/" or "group/version" into
        cmd/libs/go2idl/conversion-gen/main.go;
     2. Make sure your pkg/apis/`<group>`/`<version>` directory has a doc.go file
-       with the comment `// +k8s:deepcopy-gen=register`, to catch the attention
-       of our generation tools.
+       with the comment `// +k8s:deepcopy-gen=package,register`, to catch the
+       attention of our generation tools.
     3. Make sure your pkg/apis/`<group>`/`<version>` directory has a doc.go file
        with the comment `// +genconversion=true`, to catch the attention of our
        gen-conversion script.