diff --git a/dev-R/RcppArmadillo/RcppArmadillo-0.10.8.1.0.ebuild b/dev-R/RcppArmadillo/RcppArmadillo-0.10.8.1.0-r1.ebuild
similarity index 98%
rename from dev-R/RcppArmadillo/RcppArmadillo-0.10.8.1.0.ebuild
rename to dev-R/RcppArmadillo/RcppArmadillo-0.10.8.1.0-r1.ebuild
index 364b05a04f..30280253aa 100644
--- a/dev-R/RcppArmadillo/RcppArmadillo-0.10.8.1.0.ebuild
+++ b/dev-R/RcppArmadillo/RcppArmadillo-0.10.8.1.0-r1.ebuild
@@ -9,6 +9,8 @@ MY_PV="$(ver_cut 2-3 ${PV})"
 
 DESCRIPTION='Rcpp Integration for the Armadillo templated linear algebra library'
 SRC_URI="mirror://cran/src/contrib/${PN}_${PV}.tar.gz"
+
+SLOT="0/${PV}"
 KEYWORDS="~amd64"
 LICENSE='GPL-2+'