diff --git a/cbor_gen.go b/cbor_gen.go
index 42ad7c029..b69e95c68 100644
--- a/cbor_gen.go
+++ b/cbor_gen.go
@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io"
 
+	"github.com/filecoin-project/lotus/api"
 	"github.com/filecoin-project/specs-actors/actors/abi"
 	cbg "github.com/whyrusleeping/cbor-gen"
 	xerrors "golang.org/x/xerrors"
@@ -181,7 +182,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 		return err
 	}
 
-	// t.State (uint64) (uint64)
+	// t.State (api.SectorState) (string)
 	if len("State") > cbg.MaxLength {
 		return xerrors.Errorf("Value in field \"State\" was too long")
 	}
@@ -193,7 +194,14 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 		return err
 	}
 
-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajUnsignedInt, uint64(t.State))); err != nil {
+	if len(t.State) > cbg.MaxLength {
+		return xerrors.Errorf("Value in field t.State was too long")
+	}
+
+	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajTextString, uint64(len(t.State)))); err != nil {
+		return err
+	}
+	if _, err := w.Write([]byte(t.State)); err != nil {
 		return err
 	}
 
@@ -521,20 +529,16 @@ func (t *SectorInfo) UnmarshalCBOR(r io.Reader) error {
 		}
 
 		switch name {
-		// t.State (uint64) (uint64)
+		// t.State (api.SectorState) (string)
 		case "State":
 
 			{
-
-				maj, extra, err = cbg.CborReadHeader(br)
+				sval, err := cbg.ReadString(br)
 				if err != nil {
 					return err
 				}
-				if maj != cbg.MajUnsignedInt {
-					return fmt.Errorf("wrong type for uint64 field")
-				}
-				t.State = uint64(extra)
 
+				t.State = api.SectorState(sval)
 			}
 			// t.SectorID (abi.SectorNumber) (uint64)
 		case "SectorID":
diff --git a/fsm.go b/fsm.go
index 0911bfba5..a2951d807 100644
--- a/fsm.go
+++ b/fsm.go
@@ -32,7 +32,7 @@ func (m *Sealing) Plan(events []statemachine.Event, user interface{}) (interface
 	}, uint64(len(events)), nil // TODO: This processed event count is not very correct
 }
 
-var fsmPlanners = []func(events []statemachine.Event, state *SectorInfo) error{
+var fsmPlanners = map[api.SectorState]func(events []statemachine.Event, state *SectorInfo) error{
 	api.UndefinedSectorState: planOne(on(SectorStart{}, api.Packing)),
 	api.Packing:              planOne(on(SectorPacked{}, api.Unsealed)),
 	api.Unsealed: planOne(
@@ -105,11 +105,11 @@ func (m *Sealing) plan(events []statemachine.Event, state *SectorInfo) (func(sta
 
 	p := fsmPlanners[state.State]
 	if p == nil {
-		return nil, xerrors.Errorf("planner for state %s not found", api.SectorStates[state.State])
+		return nil, xerrors.Errorf("planner for state %s not found", state.State)
 	}
 
 	if err := p(events, state); err != nil {
-		return nil, xerrors.Errorf("running planner for state %s failed: %w", api.SectorStates[state.State], err)
+		return nil, xerrors.Errorf("running planner for state %s failed: %w", state.State, err)
 	}
 
 	/////
@@ -251,7 +251,7 @@ func (m *Sealing) ForceSectorState(ctx context.Context, id abi.SectorNumber, sta
 }
 
 func final(events []statemachine.Event, state *SectorInfo) error {
-	return xerrors.Errorf("didn't expect any events in state %s, got %+v", api.SectorStates[state.State], events)
+	return xerrors.Errorf("didn't expect any events in state %s, got %+v", state.State, events)
 }
 
 func on(mut mutator, next api.SectorState) func() (mutator, api.SectorState) {
@@ -269,7 +269,7 @@ func planOne(ts ...func() (mut mutator, next api.SectorState)) func(events []sta
 					return nil
 				}
 			}
-			return xerrors.Errorf("planner for state %s only has a plan for a single event only, got %+v", api.SectorStates[state.State], events)
+			return xerrors.Errorf("planner for state %s only has a plan for a single event only, got %+v", state.State, events)
 		}
 
 		if gm, ok := events[0].User.(globalMutator); ok {
@@ -293,6 +293,6 @@ func planOne(ts ...func() (mut mutator, next api.SectorState)) func(events []sta
 			return nil
 		}
 
-		return xerrors.Errorf("planner for state %s received unexpected event %T (%+v)", api.SectorStates[state.State], events[0].User, events[0])
+		return xerrors.Errorf("planner for state %s received unexpected event %T (%+v)", state.State, events[0].User, events[0])
 	}
 }
diff --git a/states_failed.go b/states_failed.go
index d5667f57e..da5227683 100644
--- a/states_failed.go
+++ b/states_failed.go
@@ -9,7 +9,6 @@ import (
 	"github.com/filecoin-project/specs-actors/actors/util/adt"
 	"golang.org/x/xerrors"
 
-	"github.com/filecoin-project/lotus/api"
 	"github.com/filecoin-project/lotus/api/apibstore"
 	"github.com/filecoin-project/lotus/chain/store"
 	"github.com/filecoin-project/lotus/chain/types"
@@ -20,7 +19,7 @@ const minRetryTime = 1 * time.Minute
 func failedCooldown(ctx statemachine.Context, sector SectorInfo) error {
 	retryStart := time.Unix(int64(sector.Log[len(sector.Log)-1].Timestamp), 0).Add(minRetryTime)
 	if len(sector.Log) > 0 && !time.Now().After(retryStart) {
-		log.Infof("%s(%d), waiting %s before retrying", api.SectorStates[sector.State], sector.SectorID, time.Until(retryStart))
+		log.Infof("%s(%d), waiting %s before retrying", sector.State, sector.SectorID, time.Until(retryStart))
 		select {
 		case <-time.After(time.Until(retryStart)):
 		case <-ctx.Context().Done():