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 03549b025..9c6d70010 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
@@ -30,11 +30,17 @@ logScope:
 # using the when predicate does not work within the contract macro, hence need to dupe
 contract(WakuRlnContract):
   # this serves as an entrypoint into the rln membership set
-  proc register(idCommitment: UInt256, userMessageLimit: UInt32, idCommitmentsToErase: seq[UInt256])
+  proc register(
+    idCommitment: UInt256, userMessageLimit: UInt32, idCommitmentsToErase: seq[UInt256]
+  )
+
   # Initializes the implementation contract (only used in unit tests)
   proc initialize(maxMessageLimit: UInt256)
   # this event is raised when a new member is registered
-  proc MembershipRegistered(idCommitment: UInt256, membershipRateLimit: UInt256, index: UInt32) {.event.}
+  proc MembershipRegistered(
+    idCommitment: UInt256, membershipRateLimit: UInt256, index: UInt32
+  ) {.event.}
+
   # this function denotes existence of a given user
   proc isInMembershipSet(idCommitment: Uint256): bool {.view.}
   # this constant describes the next index of a new member