diff --git a/files/scripts/service_mgmt.sh b/files/scripts/service_mgmt.sh
index c1916aefa0..c529ef92ce 100755
--- a/files/scripts/service_mgmt.sh
+++ b/files/scripts/service_mgmt.sh
@@ -40,7 +40,7 @@ function check_redundant_type()
         ACTIVE_ACTIVE="false"
     fi
     CONFIG_KNOB=`$SONIC_DB_CLI CONFIG_DB hget "MUX_LINKMGR|SERVICE_MGMT" kill_radv`
-    if [[ x"$CONFIG_KNOB" != x"True" ]]; then
+    if [[ x"$CONFIG_KNOB" == x"False" ]]; then
         ACTIVE_ACTIVE='false'
     fi 
     debug "DEVICE_SUBTYPE: ${DEVICE_SUBTYPE}, CONFIG_KNOB: ${CONFIG_KNOB}"