diff --git a/stack.sh b/stack.sh
index 13b12bc..6229856 100755
--- a/stack.sh
+++ b/stack.sh
@@ -321,7 +321,7 @@
 
 if [[ "$ENABLED_SERVICES" =~ "n-net" ]]; then
     # delete traces of nova networks from prior runs
-    killall dnsmasq || true
+    sudo killall dnsmasq || true
     rm -rf $NOVA_DIR/networks
     mkdir -p $NOVA_DIR/networks
 fi