diff --git a/dev-libs/protothreads/protothreads-1.4-r1.ebuild b/dev-libs/protothreads/protothreads-1.4-r2.ebuild
similarity index 98%
rename from dev-libs/protothreads/protothreads-1.4-r1.ebuild
rename to dev-libs/protothreads/protothreads-1.4-r2.ebuild
index c312adc83d..f117992e83 100644
--- a/dev-libs/protothreads/protothreads-1.4-r1.ebuild
+++ b/dev-libs/protothreads/protothreads-1.4-r2.ebuild
@@ -14,7 +14,7 @@ SRC_URI="
 S="${WORKDIR}/pt-${PV}"
 
 LICENSE="BSD"
-SLOT="0"
+SLOT="0/${PV}"
 KEYWORDS="~amd64"
 IUSE="doc examples"