diff --git a/waku/factory/waku_conf.nim b/waku/factory/waku_conf.nim
index caf925ff2..7b7ef2b80 100644
--- a/waku/factory/waku_conf.nim
+++ b/waku/factory/waku_conf.nim
@@ -158,8 +158,7 @@ proc logConf*(conf: WakuConf) =
         contract = rlnRelayConf.ethContractAddress.string,
         maxMessageSize = conf.maxMessageSizeBytes,
         rlnEpochSizeSec = rlnRelayConf.epochSizeSec,
-        rlnRelayUserMessageLimit = rlnRelayConf.userMessageLimit,
-        ethClientUrls = rlnRelayConf.ethClientUrls
+        rlnRelayUserMessageLimit = rlnRelayConf.userMessageLimit
 
 proc validateNodeKey(wakuConf: WakuConf): Result[void, string] =
   wakuConf.nodeKey.getPublicKey().isOkOr:
diff --git a/waku/waku_rln_relay/group_manager/on_chain/group_manager.nim b/waku/waku_rln_relay/group_manager/on_chain/group_manager.nim
index 4f2fb5228..70a10e45e 100644
--- a/waku/waku_rln_relay/group_manager/on_chain/group_manager.nim
+++ b/waku/waku_rln_relay/group_manager/on_chain/group_manager.nim
@@ -10,7 +10,7 @@ import
   nimcrypto/keccak as keccak,
   stint,
   json,
-  std/[strutils, tables, algorithm],
+  std/[strutils, tables, algorithm, strformat],
   stew/[byteutils, arrayops],
   sequtils
 
@@ -669,7 +669,9 @@ method init*(g: OnchainGroupManager): Future[GroupManagerResult[void]] {.async.}
   elif metadataGetOptRes.get().isSome():
     let metadata = metadataGetOptRes.get().get()
     if metadata.chainId != g.chainId:
-      return err("persisted data: chain id mismatch")
+      return err(
+        fmt"chain id mismatch. persisted={metadata.chainId}, smart_contract_chainId={g.chainId}"
+      )
     if metadata.contractAddress != g.ethContractAddress.toLower():
       return err("persisted data: contract address mismatch")