diff --git a/node/modules/storageminer.go b/node/modules/storageminer.go
index 5eab2ec6202..95bfb6c115a 100644
--- a/node/modules/storageminer.go
+++ b/node/modules/storageminer.go
@@ -44,6 +44,7 @@ import (
 	paramfetch "github.com/filecoin-project/go-paramfetch"
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/go-storedcounter"
+	"github.com/filecoin-project/specs-actors/actors/builtin"
 
 	sectorstorage "github.com/filecoin-project/lotus/extern/sector-storage"
 	"github.com/filecoin-project/lotus/extern/sector-storage/ffiwrapper"
@@ -468,6 +469,13 @@ func BasicDealFilter(user dtypes.DealFilter) func(onlineOk dtypes.ConsiderOnline
 				return false, fmt.Sprintf("cannot seal a sector before %s", deal.Proposal.StartEpoch), nil
 			}
 
+			// Reject if it's more than 7 days in the future
+			// TODO: read from cfg
+			maxStartEpoch := ht + abi.ChainEpoch(7*builtin.EpochsInDay)
+			if deal.Proposal.StartEpoch > maxStartEpoch {
+				return false, fmt.Sprintf("deal start epoch is too far in the future: %s > %s", deal.Proposal.StartEpoch, maxStartEpoch), nil
+			}
+
 			if user != nil {
 				return user(ctx, deal)
 			}