diff --git a/beacon_chain/beacon_node.nim b/beacon_chain/beacon_node.nim
index db3f3694d..6b6ac170f 100644
--- a/beacon_chain/beacon_node.nim
+++ b/beacon_chain/beacon_node.nim
@@ -866,7 +866,7 @@ func slotOrZero(time: BeaconTime): Slot =
   if exSlot.afterGenesis: exSlot.slot
   else: Slot(0)
 
-func currentSlot(node: BeaconNode): Slot =
+proc currentSlot(node: BeaconNode): Slot =
   node.beaconClock.now.slotOrZero
 
 proc connectedPeersCount(node: BeaconNode): int =