diff --git a/tools/test/cells/simon-single b/tools/test/cells/simon-single
index acbd481..8e15a2b 100644
--- a/tools/test/cells/simon-single
+++ b/tools/test/cells/simon-single
@@ -4,4 +4,4 @@
 export OC1="192.168.36.1"
 export OCN="192.168.36.101"
 
-export ONOS_APPS="drivers,openflow,fwd,drivermatrix"
+export ONOS_APPS="drivers,openflow,fwd,drivermatrix,null"