diff --git a/dev-ml/mongo/mongo-0.67.2.ebuild b/dev-ml/mongo/mongo-0.67.2.ebuild
index 9c43349a1e862..08ac2cb7913e7 100644
--- a/dev-ml/mongo/mongo-0.67.2.ebuild
+++ b/dev-ml/mongo/mongo-0.67.2.ebuild
@@ -11,7 +11,7 @@ HOMEPAGE="http://massd.github.io/"
 SRC_URI="https://github.com/MassD/mongo/archive/v${PV}.tar.gz -> ${P}.tar.gz"
 
 LICENSE="MIT"
-SLOT="0"
+SLOT="0/${PV}"
 KEYWORDS="~amd64"
 IUSE=""