diff --git a/apps/chat2/chat2.nim b/apps/chat2/chat2.nim
index cbb32f027b..7fb4551d26 100644
--- a/apps/chat2/chat2.nim
+++ b/apps/chat2/chat2.nim
@@ -189,9 +189,9 @@ proc publish(c: Chat, line: string) =
     # we should check the message content topic as well
     let appendRes = c.node.wakuRlnRelay.appendRLNProof(message, float64(time))
     if appendRes.isErr():
-      debug "could not append rate limit proof to the message", success=success
+      debug "could not append rate limit proof to the message"
     else:
-      debug "rate limit proof is appended to the message", success=success
+      debug "rate limit proof is appended to the message"
       let decodeRes = RateLimitProof.init(message.proof)
       if decodeRes.isErr():
         error "could not decode the RLN proof"
diff --git a/tests/node/test_wakunode_relay_rln.nim b/tests/node/test_wakunode_relay_rln.nim
index d70c85151b..6b8acdee61 100644
--- a/tests/node/test_wakunode_relay_rln.nim
+++ b/tests/node/test_wakunode_relay_rln.nim
@@ -58,7 +58,7 @@ proc sendRlnMessage(
     payload: seq[byte] = "Hello".toBytes(),
 ): Future[bool] {.async.} =
   var message = WakuMessage(payload: payload, contentTopic: contentTopic)
-  doAssert(not client.wakuRlnRelay.appendRLNProof(message, epochTime()).isErr())
+  doAssert(client.wakuRlnRelay.appendRLNProof(message, epochTime()).isOk())
   discard await client.publish(some(pubsubTopic), message)
   let isCompleted = await completionFuture.withTimeout(FUTURE_TIMEOUT)
   return isCompleted
@@ -249,18 +249,18 @@ suite "Waku RlnRelay - End to End":
           WakuMessage(payload: @payload150kibPlus, contentTopic: contentTopic)
 
       doAssert(
-        not client.wakuRlnRelay.appendRLNProof(message1b, epoch + EpochUnitSeconds * 0).isErr()
+        client.wakuRlnRelay.appendRLNProof(message1b, epoch + EpochUnitSeconds * 0).isOk()
       )
       doAssert(
-        not client.wakuRlnRelay.appendRLNProof(message1kib, epoch + EpochUnitSeconds * 1).isErr()
+        client.wakuRlnRelay.appendRLNProof(message1kib, epoch + EpochUnitSeconds * 1).isOk()
       )
       doAssert(
-        not client.wakuRlnRelay.appendRLNProof(message150kib, epoch + EpochUnitSeconds * 2).isErr()
+        client.wakuRlnRelay.appendRLNProof(message150kib, epoch + EpochUnitSeconds * 2).isOk()
       )
       doAssert(
-        not client.wakuRlnRelay.appendRLNProof(
+        client.wakuRlnRelay.appendRLNProof(
           message151kibPlus, epoch + EpochUnitSeconds * 3
-        ).isErr()
+        ).isOk()
       )
 
       # When sending the 1B message
diff --git a/tests/waku_rln_relay/test_waku_rln_relay.nim b/tests/waku_rln_relay/test_waku_rln_relay.nim
index 481c89aa9d..9e7a1ec736 100644
--- a/tests/waku_rln_relay/test_waku_rln_relay.nim
+++ b/tests/waku_rln_relay/test_waku_rln_relay.nim
@@ -687,9 +687,9 @@ suite "Waku rln relay":
 
     # ensure proofs are added
     require:
-      proofAdded1
-      proofAdded2
-      proofAdded3
+      proofAdded1.isOk()
+      proofAdded2.isOk()
+      proofAdded3.isOk()
 
     # validate messages
     # validateMessage proc checks the validity of the message fields and adds it to the log (if valid)
diff --git a/tests/waku_rln_relay/test_wakunode_rln_relay.nim b/tests/waku_rln_relay/test_wakunode_rln_relay.nim
index 4f2365315a..c57a68b83f 100644
--- a/tests/waku_rln_relay/test_wakunode_rln_relay.nim
+++ b/tests/waku_rln_relay/test_wakunode_rln_relay.nim
@@ -85,7 +85,7 @@ procSuite "WakuNode - RLN relay":
 
     # prepare the epoch
     var message = WakuMessage(payload: @payload, contentTopic: contentTopic)
-    doAssert(node1.wakuRlnRelay.appendRLNProof(message, epochTime()))
+    doAssert(node1.wakuRlnRelay.appendRLNProof(message, epochTime()).isOk())
 
 
     ## node1 publishes a message with a rate limit proof, the message is then relayed to node2 which in turn
@@ -155,12 +155,12 @@ procSuite "WakuNode - RLN relay":
 
     for i in 0..<3:
       var message = WakuMessage(payload: ("Payload_" & $i).toBytes(), contentTopic: contentTopics[0])
-      doAssert(nodes[0].wakuRlnRelay.appendRLNProof(message, epochTime))
+      doAssert(nodes[0].wakuRlnRelay.appendRLNProof(message, epochTime).isOk())
       messages1.add(message)
 
     for i in 0..<3:
       var message = WakuMessage(payload: ("Payload_" & $i).toBytes(), contentTopic: contentTopics[1])
-      doAssert(nodes[1].wakuRlnRelay.appendRLNProof(message, epochTime))
+      doAssert(nodes[1].wakuRlnRelay.appendRLNProof(message, epochTime).isOk())
       messages2.add(message)
 
     # publish 3 messages from node[0] (last 2 are spam, window is 10 secs)
@@ -346,9 +346,9 @@ procSuite "WakuNode - RLN relay":
 
     #  check proofs are added correctly
     check:
-      proofAdded1
-      proofAdded2
-      proofAdded3
+      proofAdded1.isOk()
+      proofAdded2.isOk()
+      proofAdded3.isOk()
 
     #  relay handler for node3
     var completionFut1 = newFuture[bool]()
@@ -452,9 +452,9 @@ procSuite "WakuNode - RLN relay":
 
     #  check proofs are added correctly
     check:
-      proofAdded1
-      proofAdded2
-      proofAdded3
+      proofAdded1.isOk()
+      proofAdded2.isOk()
+      proofAdded3.isOk()
 
     #  relay handler for node2
     var completionFut1 = newFuture[bool]()