diff --git a/chain/stmgr/utils.go b/chain/stmgr/utils.go
index 7a89ab8d5..b507fd387 100644
--- a/chain/stmgr/utils.go
+++ b/chain/stmgr/utils.go
@@ -193,6 +193,16 @@ func GetMinerSectorSize(ctx context.Context, sm *StateManager, ts *types.TipSet,
 	return minfo.SectorSize, nil
 }
 
+func GetMinerSlashed(ctx context.Context, sm *StateManager, ts *types.TipSet, maddr address.Address) (uint64, error) {
+	var mas actors.StorageMinerActorState
+	_, err := sm.LoadActorState(ctx, maddr, &mas, ts)
+	if err != nil {
+		return 0, xerrors.Errorf("failed to load miner actor state: %w", err)
+	}
+
+	return mas.SlashedAt, nil
+}
+
 func GetStorageDeal(ctx context.Context, sm *StateManager, dealId uint64, ts *types.TipSet) (*actors.OnChainDeal, error) {
 	var state actors.StorageMarketState
 	if _, err := sm.LoadActorState(ctx, actors.StorageMarketAddress, &state, ts); err != nil {
diff --git a/lib/sectorbuilder/sectorbuilder_test.go b/lib/sectorbuilder/sectorbuilder_test.go
index a0547dc07..044c690bf 100644
--- a/lib/sectorbuilder/sectorbuilder_test.go
+++ b/lib/sectorbuilder/sectorbuilder_test.go
@@ -34,7 +34,7 @@ func (s *seal) precommit(t *testing.T, sb *sectorbuilder.SectorBuilder, sid uint
 	dlen := sectorbuilder.UserBytesForSectorSize(sectorSize)
 
 	var err error
-	r := io.LimitReader(rand.New(rand.NewSource(42 + int64(sid))), int64(dlen))
+	r := io.LimitReader(rand.New(rand.NewSource(42+int64(sid))), int64(dlen))
 	s.ppi, err = sb.AddPiece(dlen, sid, r, []uint64{})
 	if err != nil {
 		t.Fatalf("%+v", err)
diff --git a/node/impl/full/state.go b/node/impl/full/state.go
index 93bc973c1..8097730f4 100644
--- a/node/impl/full/state.go
+++ b/node/impl/full/state.go
@@ -52,6 +52,14 @@ func (a *StateAPI) StateMinerPower(ctx context.Context, maddr address.Address, t
 		return api.MinerPower{}, err
 	}
 
+	slashed, err := stmgr.GetMinerSlashed(ctx, a.StateManager, ts, maddr)
+	if err != nil {
+		return api.MinerPower{}, err
+	}
+	if slashed != 0 {
+		mpow = types.NewInt(0)
+	}
+
 	return api.MinerPower{
 		MinerPower: mpow,
 		TotalPower: tpow,