diff --git a/common/environment/build-style/R-cran.sh b/common/environment/build-style/R-cran.sh
index 4f996c78420..0cb7c906f95 100644
--- a/common/environment/build-style/R-cran.sh
+++ b/common/environment/build-style/R-cran.sh
@@ -5,6 +5,9 @@ build_wrksrc="${pkgname#R-cran-}"
 
 # default to cran
 if [ -z "$distfiles" ]; then
-	distfiles="https://cran.r-project.org/src/contrib/${pkgname#R-cran-}_${version//r/-}.tar.gz
-	 https://cran.r-project.org/src/contrib/Archive/${pkgname#R-cran-}/${pkgname#R-cran-}_${version//r/-}.tar.gz"
+	distfiles=" https://cran.r-project.org/src/contrib/Archive/${pkgname#R-cran-}/${pkgname#R-cran-}_${version//r/-}.tar.gz"
+	case " $XBPS_DISTFILES_MIRROR " in
+	*" https://cran.r-project.org/src/contrib "*) ;;
+	*) XBPS_DISTFILES_MIRROR+=" https://cran.r-project.org/src/contrib" ;;
+	esac
 fi