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 ef027397e..99715d5b4 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
@@ -562,7 +562,7 @@ method verifyProof*(
     return err("could not verify the proof")
 
   debug "Verification successfully", proof = proof
-  debug "------"output = ffiOk
+  debug "------", output = ffiOk
 
   return ok(validProof)