diff --git a/setup-wizard.yml b/setup-wizard.yml
index c75e9a6..b3ae419 100644
--- a/setup-wizard.yml
+++ b/setup-wizard.yml
@@ -36,11 +36,11 @@ fields:
     required: false
     description: |-
       URL to the custom RPC provider this HOPR node should use.
-      If your DAppnode is running an Ethereum client, it is **strongly recommended** to use it here.
+      If your DAppnode is running a Gnosis Ethereum client, it is **strongly recommended** to use it here.
       
       *Example:* `http://nethermind-xdai.dappnode:8545`
     secret: false
-    pattern: "^http[s]{0,1}://[a-z0-9.-]{3,}:[0-9]{2,5}$"
+    pattern: "^http[s]{0,1}://[a-z0-9.-]{3,}(:[0-9]{2,5})?$"
     patternErrorMessage: Must be a valid url starting with `http://` or `https://` and ending with `:port`
 
   - id: HOPRD_NETWORK