diff --git a/src/pages/guide/node/rpc.mdx b/src/pages/guide/node/rpc.mdx
index 28833f12..ff97e76a 100644
--- a/src/pages/guide/node/rpc.mdx
+++ b/src/pages/guide/node/rpc.mdx
@@ -22,6 +22,16 @@ tempo node \
   --http.api eth,net,web3,txpool,trace
 ```
 
+## Switching chains
+
+When switching between chains (e.g., from Moderato to Presto), use a fresh datadir or delete the existing database:
+
+```bash
+rm -rf <datadir>/db
+```
+
+This is required because each chain has a different genesis block.
+
 ## Manually downloading snapshots
 
 Daily snapshots for the persistent testnet can be found at [https://snapshots.tempoxyz.dev](https://snapshots.tempoxyz.dev). You can extract them either using
diff --git a/src/pages/guide/node/validator.mdx b/src/pages/guide/node/validator.mdx
index 36b3bb10..acb91b36 100644
--- a/src/pages/guide/node/validator.mdx
+++ b/src/pages/guide/node/validator.mdx
@@ -47,6 +47,7 @@ tempo node --datadir <datadir> \
     --port 30303 \
     --discovery.addr 0.0.0.0 \
     --discovery.port 30303 \
+    --consensus.listen-address 0.0.0.0:8000 \
     --consensus.signing-key <path> \
     --consensus.fee-recipient <validator_wallet_address> \
 ```