diff --git a/dev-ml/stdlib-shims/metadata.xml b/dev-ml/stdlib-shims/metadata.xml
index 9eb14ab819d0e..20ede2e739d52 100644
--- a/dev-ml/stdlib-shims/metadata.xml
+++ b/dev-ml/stdlib-shims/metadata.xml
@@ -20,7 +20,7 @@
   <use>
     <flag name="ocamlopt">
       Whether the OCaml native code compiler is used. Must be set globally and
-      match dev-lang/ocaml.
+      match <pkg>dev-lang/ocaml</pkg>.
     </flag>
   </use>
 </pkgmetadata>