diff --git a/packages/page-calendar/src/useScheduled.ts b/packages/page-calendar/src/useScheduled.ts
index b90d7a9d9c..b4be554c6f 100644
--- a/packages/page-calendar/src/useScheduled.ts
+++ b/packages/page-calendar/src/useScheduled.ts
@@ -80,7 +80,7 @@ function createDispatches (bestNumber: BlockNumber, blockTime: number, dispatche
 
 function createReferendums (bestNumber: BlockNumber, blockTime: number, referendums: DeriveReferendumExt[]): [EntryType, EntryInfo[]][] {
   return referendums.reduce((result: [EntryType, EntryInfo[]][], { index, status }): [EntryType, EntryInfo[]][] => {
-    const enactBlocks = status.end.add(status.delay).sub(bestNumber);
+    const enactBlocks = status.end.add(status.delay).isub(bestNumber);
     const voteBlocks = status.end.sub(bestNumber).isub(BN_ONE);
 
     result.push(['referendumVote', [{
@@ -188,7 +188,7 @@ export default function useScheduled (): EntryInfo[] {
   const councilMotions = useCall<DeriveCollectiveProposal[]>(api.derive.council?.proposals);
   const dispatches = useCall<DeriveDispatch[]>(api.derive.democracy?.dispatchQueue);
   const referendums = useCall<DeriveReferendumExt[]>(api.derive.democracy?.referendums);
-  const scheduled = useCall<ScheduleEntry[]>(api.query.scheduler?.agenda.entries);
+  const scheduled = useCall<ScheduleEntry[]>(api.query.scheduler?.agenda?.entries);
   const sessionInfo = useCall<DeriveSessionProgress>(api.query.staking && api.derive.session?.progress);
   const slashes = useCall<SlashEntry[]>(api.query.staking?.unappliedSlashes.entries);
   const [state, setState] = useState<EntryInfoTyped[]>([]);