diff --git a/chain/messagepool/messagepool_test.go b/chain/messagepool/messagepool_test.go
index 9709931a9..fb07120b0 100644
--- a/chain/messagepool/messagepool_test.go
+++ b/chain/messagepool/messagepool_test.go
@@ -87,7 +87,7 @@ func (tma *testMpoolAPI) PubSubPublish(string, []byte) error {
 func (tma *testMpoolAPI) StateGetActor(addr address.Address, ts *types.TipSet) (*types.Actor, error) {
 	balance, ok := tma.balance[addr]
 	if !ok {
-		balance = types.NewInt(90000000)
+		balance = types.NewInt(1000e6)
 		tma.balance[addr] = balance
 	}
 	return &types.Actor{
diff --git a/chain/messagepool/selection.go b/chain/messagepool/selection.go
index 030981409..6e8bf2f70 100644
--- a/chain/messagepool/selection.go
+++ b/chain/messagepool/selection.go
@@ -1,7 +1,6 @@
 package messagepool
 
 import (
-	"context"
 	"math/big"
 	"sort"
 	"time"
@@ -233,19 +232,7 @@ func (mp *MessagePool) getPendingMessages(curTs, ts *types.TipSet) (map[address.
 }
 
 func (mp *MessagePool) getGasReward(msg *types.SignedMessage, ts *types.TipSet) *big.Int {
-	al := func(ctx context.Context, addr address.Address, tsk types.TipSetKey) (*types.Actor, error) {
-		return mp.api.StateGetActor(addr, ts)
-	}
-	gasUsed, err := gasguess.GuessGasUsed(context.TODO(), types.EmptyTSK, msg, al)
-	if err != nil {
-		gasUsed = int64(gasguess.MaxGas)
-		if gasUsed > msg.Message.GasLimit/2 {
-			gasUsed = msg.Message.GasLimit / 2
-		}
-		// if we start seeing this warning we may have a problem with spammers!
-		log.Warnf("Cannot guess gas usage for message: %s; using %d", err, gasUsed)
-	}
-	gasReward := abig.Mul(msg.Message.GasPrice, types.NewInt(uint64(gasUsed)))
+	gasReward := abig.Mul(msg.Message.GasPremium, types.NewInt(uint64(msg.Message.GasLimit)))
 	return gasReward.Int
 }
 
diff --git a/chain/messagepool/selection_test.go b/chain/messagepool/selection_test.go
index 177da4531..5967ad649 100644
--- a/chain/messagepool/selection_test.go
+++ b/chain/messagepool/selection_test.go
@@ -20,13 +20,14 @@ import (
 
 func makeTestMessage(w *wallet.Wallet, from, to address.Address, nonce uint64, gasLimit int64, gasPrice uint64) *types.SignedMessage {
 	msg := &types.Message{
-		From:     from,
-		To:       to,
-		Method:   2,
-		Value:    types.FromFil(0),
-		Nonce:    nonce,
-		GasLimit: gasLimit,
-		GasPrice: types.NewInt(gasPrice),
+		From:       from,
+		To:         to,
+		Method:     2,
+		Value:      types.FromFil(0),
+		Nonce:      nonce,
+		GasLimit:   gasLimit,
+		GasFeeCap:  types.NewInt(gasPrice + 100),
+		GasPremium: types.NewInt(gasPrice),
 	}
 	sig, err := w.Sign(context.TODO(), from, msg.Cid().Bytes())
 	if err != nil {
diff --git a/chain/types/mock/chain.go b/chain/types/mock/chain.go
index d818cb5ac..33b13d408 100644
--- a/chain/types/mock/chain.go
+++ b/chain/types/mock/chain.go
@@ -23,12 +23,13 @@ func Address(i uint64) address.Address {
 
 func MkMessage(from, to address.Address, nonce uint64, w *wallet.Wallet) *types.SignedMessage {
 	msg := &types.Message{
-		To:       to,
-		From:     from,
-		Value:    types.NewInt(1),
-		Nonce:    nonce,
-		GasLimit: 1000000,
-		GasPrice: types.NewInt(0),
+		To:         to,
+		From:       from,
+		Value:      types.NewInt(1),
+		Nonce:      nonce,
+		GasLimit:   1000000,
+		GasFeeCap:  types.NewInt(100),
+		GasPremium: types.NewInt(1),
 	}
 
 	sig, err := w.Sign(context.TODO(), from, msg.Cid().Bytes())