diff --git a/beacon_chain/networking/eth2_network.nim b/beacon_chain/networking/eth2_network.nim
index db6446c8e..793d5b792 100644
--- a/beacon_chain/networking/eth2_network.nim
+++ b/beacon_chain/networking/eth2_network.nim
@@ -1550,7 +1550,7 @@ proc getLowSubnets(node: Eth2Node, epoch: Epoch):
       findLowSubnets(getSyncCommitteeTopic, SyncSubcommitteeIndex, SYNC_COMMITTEE_SUBNET_COUNT)
     else:
       default(SyncnetBits),
-    findLowSubnets(getDataColumnSidecarTopic, uint64, DATA_COLUMN_SIDECAR_SUBNET_COUNT.int).countOnes.uint64
+    findLowSubnets(getDataColumnSidecarTopic, uint64, DATA_COLUMN_SIDECAR_SUBNET_COUNT.int).countOnes.uint8
   )
 
 proc runDiscoveryLoop(node: Eth2Node) {.async.} =
@@ -2598,7 +2598,7 @@ proc updateStabilitySubnetMetadata*(node: Eth2Node, attnets: AttnetBits) =
   else:
     debug "Stability subnets changed; updated ENR attnets", attnets
 
-proc loadCscnetsMetadata*(node: Eth2Node, cscnets: uint64) =
+proc loadCscnetsMetadata*(node: Eth2Node, cscnets: CscCount) =
   if node.metadata.custody_subnet_count == cscnets:
     return
 
diff --git a/beacon_chain/nimbus_beacon_node.nim b/beacon_chain/nimbus_beacon_node.nim
index f01864094..f64cfe4b1 100644
--- a/beacon_chain/nimbus_beacon_node.nim
+++ b/beacon_chain/nimbus_beacon_node.nim
@@ -1154,13 +1154,13 @@ proc addDenebMessageHandlers(
     node.network.subscribe(topic, basicParams)
 
   if node.config.subscribeAllSubnets:
-    node.network.loadCscnetsMetadata(DATA_COLUMN_SIDECAR_SUBNET_COUNT.uint64)
+    node.network.loadCscnetsMetadata(DATA_COLUMN_SIDECAR_SUBNET_COUNT.uint8)
   elif not node.config.subscribeAllSubnets:
     let csc = node.config.custodySubnetCount
     if csc.isSome and csc.get < DATA_COLUMN_SIDECAR_SUBNET_COUNT:
-      node.network.loadCscnetsMetadata(csc.get.uint64)
+      node.network.loadCscnetsMetadata(csc.get.uint8)
     else:
-      node.network.loadCscnetsMetadata(CUSTODY_REQUIREMENT.uint64)
+      node.network.loadCscnetsMetadata(CUSTODY_REQUIREMENT.uint8)
 
 proc addElectraMessageHandlers(
     node: BeaconNode, forkDigest: ForkDigest, slot: Slot) =
diff --git a/beacon_chain/spec/datatypes/eip7594.nim b/beacon_chain/spec/datatypes/eip7594.nim
index 4a6ac0e64..69769a082 100644
--- a/beacon_chain/spec/datatypes/eip7594.nim
+++ b/beacon_chain/spec/datatypes/eip7594.nim
@@ -77,7 +77,7 @@ type
     column_index*: ColumnIndex
     row_index*: RowIndex
 
-  CscCount* = uint64
+  CscCount* = uint8
 
   # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.4/specs/_features/eip7594/p2p-interface.md#metadata
   MetaData* = object