diff --git a/config/protocol.mainnet.yml b/config/protocol.mainnet.yml
index 655b7f0ef..51db3ecdd 100644
--- a/config/protocol.mainnet.yml
+++ b/config/protocol.mainnet.yml
@@ -42,7 +42,7 @@ ApplicationConfiguration:
   #      DB: 0
   #    BoltDBOptions:
   #      FilePath: "./chains/mainnet.bolt"
-  NodePort: 20333
+  NodePort: 10333
   Relay: true
   DialTimeout: 3
   ProtoTickInterval: 2
@@ -51,7 +51,7 @@ ApplicationConfiguration:
   RPC:
     Enabled: true
     EnableCORSWorkaround: false
-    Port: 20332
+    Port: 10332
   Monitoring:
     Enabled: true
     Port: 2112