diff --git a/tools/test/cells/simon-single b/tools/test/cells/simon-single
index 98913dc..6fac736 100644
--- a/tools/test/cells/simon-single
+++ b/tools/test/cells/simon-single
@@ -4,4 +4,4 @@
 export OC1="192.168.56.1"
 export OCN="192.168.56.99"
 
-export ONOS_APPS="drivers,openflow,drivermatrix"
+export ONOS_APPS="drivers,openflow,drivermatrix,null"