diff --git a/api/api_full.go b/api/api_full.go
index c33a7abb8..3c28b5982 100644
--- a/api/api_full.go
+++ b/api/api_full.go
@@ -119,7 +119,7 @@ type FullNode interface {
 
 	StateMinerSectors(context.Context, address.Address, types.TipSetKey) ([]*ChainSectorInfo, error)
 	StateMinerProvingSet(context.Context, address.Address, types.TipSetKey) ([]*ChainSectorInfo, error)
-	StateMinerPower(context.Context, address.Address, types.TipSetKey) (MinerPower, error)
+	StateMinerPower(context.Context, address.Address, types.TipSetKey) (*MinerPower, error)
 	StateMinerWorker(context.Context, address.Address, types.TipSetKey) (address.Address, error)
 	StateMinerPeerID(ctx context.Context, m address.Address, tsk types.TipSetKey) (peer.ID, error)
 	StateMinerPostState(ctx context.Context, actor address.Address, tsk types.TipSetKey) (*miner.PoStState, error)
diff --git a/api/apistruct/struct.go b/api/apistruct/struct.go
index 4fc70904c..9eb73c637 100644
--- a/api/apistruct/struct.go
+++ b/api/apistruct/struct.go
@@ -107,7 +107,7 @@ type FullNodeStruct struct {
 
 		StateMinerSectors       func(context.Context, address.Address, types.TipSetKey) ([]*api.ChainSectorInfo, error)                      `perm:"read"`
 		StateMinerProvingSet    func(context.Context, address.Address, types.TipSetKey) ([]*api.ChainSectorInfo, error)                      `perm:"read"`
-		StateMinerPower         func(context.Context, address.Address, types.TipSetKey) (api.MinerPower, error)                              `perm:"read"`
+		StateMinerPower         func(context.Context, address.Address, types.TipSetKey) (*api.MinerPower, error)                             `perm:"read"`
 		StateMinerWorker        func(context.Context, address.Address, types.TipSetKey) (address.Address, error)                             `perm:"read"`
 		StateMinerPeerID        func(ctx context.Context, m address.Address, tsk types.TipSetKey) (peer.ID, error)                           `perm:"read"`
 		StateMinerPostState     func(ctx context.Context, actor address.Address, tsk types.TipSetKey) (*miner.PoStState, error)              `perm:"read"`
@@ -446,7 +446,7 @@ func (c *FullNodeStruct) StateMinerProvingSet(ctx context.Context, addr address.
 	return c.Internal.StateMinerProvingSet(ctx, addr, tsk)
 }
 
-func (c *FullNodeStruct) StateMinerPower(ctx context.Context, a address.Address, tsk types.TipSetKey) (api.MinerPower, error) {
+func (c *FullNodeStruct) StateMinerPower(ctx context.Context, a address.Address, tsk types.TipSetKey) (*api.MinerPower, error) {
 	return c.Internal.StateMinerPower(ctx, a, tsk)
 }
 
diff --git a/chain/gen/gen.go b/chain/gen/gen.go
index 2d1033227..aab6db675 100644
--- a/chain/gen/gen.go
+++ b/chain/gen/gen.go
@@ -444,7 +444,7 @@ func (cg *ChainGen) YieldRepo() (repo.Repo, error) {
 type MiningCheckAPI interface {
 	ChainGetRandomness(ctx context.Context, tsk types.TipSetKey, personalization crypto.DomainSeparationTag, randEpoch abi.ChainEpoch, entropy []byte) (abi.Randomness, error)
 
-	StateMinerPower(context.Context, address.Address, types.TipSetKey) (api.MinerPower, error)
+	StateMinerPower(context.Context, address.Address, types.TipSetKey) (*api.MinerPower, error)
 
 	StateMinerWorker(context.Context, address.Address, types.TipSetKey) (address.Address, error)
 
@@ -469,17 +469,17 @@ func (mca mca) ChainGetRandomness(ctx context.Context, tsk types.TipSetKey, pers
 	return mca.sm.ChainStore().GetRandomness(ctx, pts.Cids(), personalization, int64(randEpoch), entropy)
 }
 
-func (mca mca) StateMinerPower(ctx context.Context, maddr address.Address, tsk types.TipSetKey) (api.MinerPower, error) {
+func (mca mca) StateMinerPower(ctx context.Context, maddr address.Address, tsk types.TipSetKey) (*api.MinerPower, error) {
 	ts, err := mca.sm.ChainStore().LoadTipSet(tsk)
 	if err != nil {
-		return api.MinerPower{}, xerrors.Errorf("loading tipset %s: %w", tsk, err)
+		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
 	}
 	mpow, tpow, err := stmgr.GetPower(ctx, mca.sm, ts, maddr)
 	if err != nil {
-		return api.MinerPower{}, err
+		return nil, err
 	}
 
-	return api.MinerPower{
+	return &api.MinerPower{
 		MinerPower: mpow,
 		TotalPower: tpow,
 	}, err
diff --git a/node/impl/full/state.go b/node/impl/full/state.go
index 7c3c2c8d5..0e7ab49c0 100644
--- a/node/impl/full/state.go
+++ b/node/impl/full/state.go
@@ -64,27 +64,27 @@ func (a *StateAPI) StateMinerProvingSet(ctx context.Context, addr address.Addres
 	return stmgr.GetMinerProvingSet(ctx, a.StateManager, ts, addr)
 }
 
-func (a *StateAPI) StateMinerPower(ctx context.Context, maddr address.Address, tsk types.TipSetKey) (api.MinerPower, error) {
+func (a *StateAPI) StateMinerPower(ctx context.Context, maddr address.Address, tsk types.TipSetKey) (*api.MinerPower, error) {
 	ts, err := a.Chain.GetTipSetFromKey(tsk)
 	if err != nil {
-		return api.MinerPower{}, xerrors.Errorf("loading tipset %s: %w", tsk, err)
+		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
 	}
 	mpow, tpow, err := stmgr.GetPower(ctx, a.StateManager, ts, maddr)
 	if err != nil {
-		return api.MinerPower{}, err
+		return nil, err
 	}
 
 	if maddr != address.Undef {
 		slashed, err := stmgr.GetMinerSlashed(ctx, a.StateManager, ts, maddr)
 		if err != nil {
-			return api.MinerPower{}, err
+			return nil, err
 		}
 		if slashed {
 			mpow = types.NewInt(0)
 		}
 	}
 
-	return api.MinerPower{
+	return &api.MinerPower{
 		MinerPower: mpow,
 		TotalPower: tpow,
 	}, nil