diff --git a/srcpkgs/base-system/template b/srcpkgs/base-system/template
index 99e426442c1..431b2724544 100644
--- a/srcpkgs/base-system/template
+++ b/srcpkgs/base-system/template
@@ -16,14 +16,13 @@ makedepends="
  iproute2 iputils bridge-utils ifenslave iw wpa_supplicant xbps netbsd-wtf
  nvi sudo wifi-firmware linux void-artwork nss-mdns traceroute ethtool parted"
 
-if [ "$XBPS_TARGET_MACHINE" = "i686" ]; then
-	makedepends+=" grub"
-elif [ "$XBPS_TARGET_MACHINE" = "x86_64" ]; then
-	makedepends+=" grub-x86_64-efi"
-elif [ "$XBPS_TARGET_MACHINE" = "armv6l" ]; then
+case "$XBPS_TARGET_MACHINE" in
+	i686) makedepends+=" grub";;
+	x86_64) makedepends+=" grub-x86_64-efi";;
 	# XXX only for Raspberry Pi
-	makedepends+=" rpi-base-files rpi-firmware"
-fi
+	armv6l) makedepends+=" rpi-base-files rpi-firmware";;
+	*) msg_error "${pkgname}-${version}: unsupported target machine.\n";;
+esac
 
 # gcc and glibc shouldn't be direct dependencies.
 for f in ${makedepends}; do