diff --git a/dev-ml/camlp5/camlp5-7.10.ebuild b/dev-ml/camlp5/camlp5-7.10.ebuild
index 542b744b42f56..5d5237a3aebff 100644
--- a/dev-ml/camlp5/camlp5-7.10.ebuild
+++ b/dev-ml/camlp5/camlp5-7.10.ebuild
@@ -15,7 +15,7 @@ SLOT="0/${PV}"
 KEYWORDS="~alpha ~amd64 ~ppc ~x86"
 IUSE="doc +ocamlopt"
 
-DEPEND="dev-lang/ocaml"
+DEPEND="<dev-lang/ocaml-4.09"
 RDEPEND="${DEPEND}"
 
 DOCS="CHANGES DEVEL ICHANGES README.md UPGRADING MODE"