diff --git a/core/vm/lightclient/v2/lightclient.go b/core/vm/lightclient/v2/lightclient.go
index d5de960750..8dd4ee680c 100644
--- a/core/vm/lightclient/v2/lightclient.go
+++ b/core/vm/lightclient/v2/lightclient.go
@@ -118,12 +118,14 @@ func (cs *ConsensusState) ApplyLightBlock(block *types.LightBlock) (bool, error)
 		}
 	}
 
+	valSetChanged := !(bytes.Equal(cs.ValidatorSet.Hash(), block.ValidatorsHash))
+
 	// update consensus state
 	cs.Height = uint64(block.Height)
 	cs.NextValidatorSetHash = block.NextValidatorsHash
 	cs.ValidatorSet = block.ValidatorSet
 
-	return !(bytes.Equal(cs.ValidatorSet.Hash(), block.ValidatorsHash)), nil
+	return valSetChanged, nil
 }
 
 // input:
diff --git a/core/vm/lightclient/v2/lightclient_test.go b/core/vm/lightclient/v2/lightclient_test.go
index 7519ad2a19..ab35b220e4 100644
--- a/core/vm/lightclient/v2/lightclient_test.go
+++ b/core/vm/lightclient/v2/lightclient_test.go
@@ -69,6 +69,26 @@ var testcases = []struct {
 	},
 }
 
+var applyBlocksTestcases = []struct {
+	consensusStateBytes string
+	lightBlockBytes     string
+	expectHeight        uint64
+	expectValSetChanged bool
+}{
+	{
+		consensusStateBytes: "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",
+		lightBlockBytes:     "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",
+		expectHeight:        2,
+		expectValSetChanged: false,
+	},
+	{
+		consensusStateBytes: "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",
+		lightBlockBytes:     "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",
+		expectHeight:        273513,
+		expectValSetChanged: true,
+	},
+}
+
 func TestEncodeConsensusState(t *testing.T) {
 	for i := 0; i < len(testcases); i++ {
 		testcase := testcases[i]
@@ -147,28 +167,32 @@ func TestDecodeConsensusState(t *testing.T) {
 }
 
 func TestConsensusStateApplyLightBlock(t *testing.T) {
-	csBytes, err := hex.DecodeString("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")
-	require.NoError(t, err)
-	t.Logf("cs length: %d\n", len(csBytes))
-	blockBytes, err := hex.DecodeString("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")
-	require.NoError(t, err)
-
-	var lbpb tmproto.LightBlock
-	err = lbpb.Unmarshal(blockBytes)
-	require.NoError(t, err)
-	block, err := types.LightBlockFromProto(&lbpb)
-	require.NoError(t, err)
-
-	cs, err := DecodeConsensusState(csBytes)
-	require.NoError(t, err)
-	validatorSetChanged, err := cs.ApplyLightBlock(block)
-	require.NoError(t, err)
-
-	if cs.Height != 2 {
-		t.Fatalf("Height is unexpected, expected: 2, actual: %d\n", cs.Height)
-	}
+	for i := 0; i < len(applyBlocksTestcases); i++ {
+		testcase := applyBlocksTestcases[i]
+
+		csBytes, err := hex.DecodeString(testcase.consensusStateBytes)
+		require.NoError(t, err)
 
-	if validatorSetChanged {
-		t.Fatalf("Validator set has exchanaged which is not expected.\n")
+		blockBytes, err := hex.DecodeString(testcase.lightBlockBytes)
+		require.NoError(t, err)
+
+		var lbpb tmproto.LightBlock
+		err = lbpb.Unmarshal(blockBytes)
+		require.NoError(t, err)
+		block, err := types.LightBlockFromProto(&lbpb)
+		require.NoError(t, err)
+
+		cs, err := DecodeConsensusState(csBytes)
+		require.NoError(t, err)
+		validatorSetChanged, err := cs.ApplyLightBlock(block)
+		require.NoError(t, err)
+
+		if cs.Height != testcase.expectHeight {
+			t.Fatalf("Height is unexpected, expected: %d, actual: %d\n", testcase.expectHeight, cs.Height)
+		}
+
+		if validatorSetChanged != testcase.expectValSetChanged {
+			t.Fatalf("Validator set changed is unexpected, expected: %v, actual: %v\n", testcase.expectValSetChanged, validatorSetChanged)
+		}
 	}
 }