diff --git a/BioArchLinux/r-frf2/PKGBUILD b/BioArchLinux/r-frf2/PKGBUILD
index 8523dda8fc..e30447b693 100644
--- a/BioArchLinux/r-frf2/PKGBUILD
+++ b/BioArchLinux/r-frf2/PKGBUILD
@@ -32,6 +32,5 @@ build() {
 package() {
   install -dm0755 "${pkgdir}/usr/lib/R/library"
   cp -a --no-preserve=ownership "${_pkgname}" "${pkgdir}/usr/lib/R/library"
-  install -Dm644 "${_pkgname}/LICENSE" -t "${pkgdir}/usr/share/licenses/${pkgname}"
 }
 # vim:set ts=2 sw=2 et:
diff --git a/BioArchLinux/r-openmx/PKGBUILD b/BioArchLinux/r-openmx/PKGBUILD
index 65c28dbe36..7c7930728a 100644
--- a/BioArchLinux/r-openmx/PKGBUILD
+++ b/BioArchLinux/r-openmx/PKGBUILD
@@ -46,6 +46,8 @@ source=("https://cran.r-project.org/src/contrib/${_pkgname}_${_pkgver}.tar.gz")
 sha256sums=('65c50ce09f9c006b41b7311ec05eba3ae77926d84fb44e3905905208404826ed')
 
 build() {
+  # restrict the usage of cpu. Usage of RAM is OK.
+  export MAKE="make -j5" 
   R CMD INSTALL ${_pkgname}_${_pkgver}.tar.gz -l "${srcdir}"
 }