diff --git a/packages/page-parachains/src/Crowdloan/FundAdd.tsx b/packages/page-parachains/src/Crowdloan/FundAdd.tsx
index ce9c0a430f..4c1e903a0d 100644
--- a/packages/page-parachains/src/Crowdloan/FundAdd.tsx
+++ b/packages/page-parachains/src/Crowdloan/FundAdd.tsx
@@ -32,7 +32,7 @@ function FundAdd ({ auctionInfo, bestNumber, className, leasePeriod, ownedIds }:
   const [isOpen, toggleOpen] = useToggle();
 
   const isEndError = !bestNumber || !endBlock || endBlock.lt(bestNumber);
-  const isFirstError = !firstSlot || (!!leasePeriod && firstSlot.lte(leasePeriod.currentPeriod));
+  const isFirstError = !firstSlot || (!!leasePeriod && firstSlot.lt(leasePeriod.currentPeriod));
   const isLastError = !lastSlot || !firstSlot || lastSlot.lt(firstSlot) || lastSlot.gt(firstSlot.add(BN_THREE));
   const defaultSlot = (auctionInfo?.leasePeriod || leasePeriod?.currentPeriod.add(BN_ONE) || 1).toString();
 
@@ -95,7 +95,7 @@ function FundAdd ({ auctionInfo, bestNumber, className, leasePeriod, ownedIds }:
             <TxButton
               accountId={accountId}
               icon='plus'
-              isDisabled={!paraId || !cap?.gt(BN_ZERO) || !firstSlot?.gte(BN_ZERO) || isEndError || isFirstError || isLastError}
+              isDisabled={!paraId || !cap?.gt(BN_ZERO) || isEndError || isFirstError || isLastError}
               label={t<string>('Add')}
               onStart={toggleOpen}
               params={[paraId, cap, firstSlot, lastSlot, endBlock, null]}