diff --git a/storage/mockstorage/preseal.go b/storage/mockstorage/preseal.go
index 50810a4b2..fd4d0d69b 100644
--- a/storage/mockstorage/preseal.go
+++ b/storage/mockstorage/preseal.go
@@ -25,6 +25,7 @@ func PreSeal(ssize abi.SectorSize, maddr address.Address, sectors int) (*genesis
 	}
 
 	genm := &genesis.Miner{
+		ID:            maddr,
 		Owner:         k.Address,
 		Worker:        k.Address,
 		MarketBalance: big.NewInt(0),