diff --git a/common.config b/common.config
index 7d53bd7c..b39cb928 100644
--- a/common.config
+++ b/common.config
@@ -289,6 +289,7 @@ known_hosts()
 		SCRATCH_DEV=/dev/sda2
 		SCRATCH_MNT=/mnt/sda2
 		SCRATCH_LOGDEV=/dev/sda3
+		SCRATCH_RTDEV=/dev/sda4
 		;;
 	    dmfnt2)
 		TEST_DEV=/dev/sda6