diff --git a/scripts/target_config_lib.lua b/scripts/target_config_lib.lua
index 9118614e..e62f3210 100644
--- a/scripts/target_config_lib.lua
+++ b/scripts/target_config_lib.lua
@@ -99,12 +99,10 @@ io.stderr:write(string.format("debug: %s\n", device_pkgs))
 			handle_pkg(pkg)
 		end
 
-		if env.FOREIGN_BUILD == '' then
-			funcs.config_message(lib.config, string.format("unable to enable device '%s'", profile),
-				'CONFIG_TARGET_DEVICE_%s_DEVICE_%s=y', openwrt_config_target, profile)
-			lib.config('CONFIG_TARGET_DEVICE_PACKAGES_%s_DEVICE_%s="%s"',
-				openwrt_config_target, profile, device_pkgs)
-		end
+		funcs.config_message(lib.config, string.format("unable to enable device '%s'", profile),
+			'CONFIG_TARGET_DEVICE_%s_DEVICE_%s=y', openwrt_config_target, profile)
+		lib.config('CONFIG_TARGET_DEVICE_PACKAGES_%s_DEVICE_%s="%s"',
+			openwrt_config_target, profile, device_pkgs)
 
 	end
 
diff --git a/targets/generic_ffberlin b/targets/generic_ffberlin
index 0bc48a5f..c609ebf9 100644
--- a/targets/generic_ffberlin
+++ b/targets/generic_ffberlin
@@ -1,6 +1,7 @@
 
 try_config 'CONFIG_TARGET_MULTI_PROFILE=y'
 try_config 'CONFIG_TARGET_ALL_PROFILES=y'
+try_config 'CONFIG_TARGET_PER_DEVICE_ROOTFS=y'
 
 config 'CONFIG_DEVEL=y'
 config 'CONFIG_TOOLCHAINOPTS=y'