diff --git a/rln-delay-simulations/README.md b/rln-delay-simulations/README.md
index f950e3c..cf247b7 100644
--- a/rln-delay-simulations/README.md
+++ b/rln-delay-simulations/README.md
@@ -20,6 +20,10 @@ shadow shadow.yaml
 ```
 
 To ensure everything went allright
+
+* no errors in any stderr: eg: shadow.data/hosts/peer1/wakunode2.1000.stderr
+
+
 ```
 TODO
 ```
diff --git a/rln-delay-simulations/shadow.yaml b/rln-delay-simulations/shadow.yaml
index b820618..81de1fa 100644
--- a/rln-delay-simulations/shadow.yaml
+++ b/rln-delay-simulations/shadow.yaml
@@ -40,7 +40,7 @@ hosts:
             --rln-relay-membership-index=0
             --nat=extip:0.0.0.0
       start_time: 5s
-      environment: {"PEERS": "1000", "CONNECTTO": "50"}
+      environment: {"PEERS": "1000", "CONNECTTO": "50", "NUMPUBLISHERS": "5"}
   peer2: *client_host
   peer3: *client_host
   peer4: *client_host