diff --git a/netmap/netmap_contract.go b/netmap/netmap_contract.go
index e4b0d8f..dd5e80a 100644
--- a/netmap/netmap_contract.go
+++ b/netmap/netmap_contract.go
@@ -199,30 +199,27 @@ func AddPeer(nodeInfo []byte) {
 	notaryDisabled := storage.Get(ctx, notaryDisabledKey).(bool)
 
 	var ( // for invocation collection without notary
-		alphabet []common.IRNode
-		nodeKey  []byte
+		alphabet     []common.IRNode
+		nodeKey      []byte
+		alphabetCall bool
 	)
 
-	publicKey := nodeInfo[2:35] // offset:2, len:33
-
 	if notaryDisabled {
 		alphabet = common.AlphabetNodes()
 		nodeKey = common.InnerRingInvoker(alphabet)
-		if len(nodeKey) == 0 {
-			if !runtime.CheckWitness(publicKey) {
-				panic("addPeer: witness check failed")
-			}
-			runtime.Notify("AddPeer", nodeInfo)
-			return
-		}
+		alphabetCall = len(nodeKey) != 0
 	} else {
 		multiaddr := common.AlphabetAddress()
+		alphabetCall = runtime.CheckWitness(multiaddr)
+	}
+
+	if !alphabetCall {
+		publicKey := nodeInfo[2:35] // offset:2, len:33
 		if !runtime.CheckWitness(publicKey) {
 			panic("addPeer: witness check failed")
 		}
-		if !runtime.CheckWitness(multiaddr) {
-			panic("addPeer: alphabet witness check failed")
-		}
+		runtime.Notify("AddPeer", nodeInfo)
+		return
 	}
 
 	candidate := storageNode{
diff --git a/tests/netmap_test.go b/tests/netmap_test.go
index 6f1cf25..bace4a6 100644
--- a/tests/netmap_test.go
+++ b/tests/netmap_test.go
@@ -68,46 +68,29 @@ func TestAddPeer(t *testing.T) {
 	acc := NewAccount(t, bc)
 	dummyInfo := dummyNodeInfo(acc)
 
-	tx := PrepareInvoke(t, bc, CommitteeAcc, h, "addPeer", dummyInfo)
+	acc1 := NewAccount(t, bc)
+	tx := PrepareInvoke(t, bc, acc1, h, "addPeer", dummyInfo)
 	AddBlock(t, bc, tx)
-	CheckFault(t, bc, tx.Hash(), "addPeer: witness check failed")
+	CheckFault(t, bc, tx.Hash(), "witness check failed")
 
 	tx = PrepareInvoke(t, bc, acc, h, "addPeer", dummyInfo)
 	AddBlock(t, bc, tx)
-	CheckFault(t, bc, tx.Hash(), "addPeer: alphabet witness check failed")
-
-	tx = PrepareInvoke(t, bc, []*wallet.Account{CommitteeAcc, acc}, h, "addPeer", dummyInfo)
-	AddBlockCheckHalt(t, bc, tx)
-
-	tx = PrepareInvoke(t, bc, acc, h, "netmapCandidates")
-	AddBlock(t, bc, tx)
-
-	checkNode := func(t *testing.T, info []byte, state int64, actual stackitem.Item) {
-		// Actual is netmap.netmapNode.
-		require.Equal(t, stackitem.NewStruct([]stackitem.Item{
-			stackitem.NewStruct([]stackitem.Item{
-				stackitem.NewByteArray(dummyInfo),
-			}),
-			stackitem.NewBigInteger(big.NewInt(state)),
-		}), actual)
-	}
 
 	aer := CheckHalt(t, bc, tx.Hash())
-	nodes, _ := aer.Stack[0].Value().([]stackitem.Item)
-	require.Equal(t, 1, len(nodes))
-	checkNode(t, dummyInfo, 1, nodes[0])
+	require.Equal(t, 1, len(aer.Events))
+	require.Equal(t, "AddPeer", aer.Events[0].Name)
+	require.Equal(t, stackitem.NewArray([]stackitem.Item{stackitem.NewByteArray(dummyInfo)}),
+		aer.Events[0].Item)
 
 	dummyInfo[0] ^= 0xFF
-	tx = PrepareInvoke(t, bc, []*wallet.Account{CommitteeAcc, acc}, h, "addPeer", dummyInfo)
-	AddBlockCheckHalt(t, bc, tx)
-
-	tx = PrepareInvoke(t, bc, acc, h, "netmapCandidates")
+	tx = PrepareInvoke(t, bc, acc, h, "addPeer", dummyInfo)
 	AddBlock(t, bc, tx)
 
 	aer = CheckHalt(t, bc, tx.Hash())
-	nodes, _ = aer.Stack[0].Value().([]stackitem.Item)
-	require.Equal(t, 1, len(nodes))
-	checkNode(t, dummyInfo, 1, nodes[0])
+	require.Equal(t, 1, len(aer.Events))
+	require.Equal(t, "AddPeer", aer.Events[0].Name)
+	require.Equal(t, stackitem.NewArray([]stackitem.Item{stackitem.NewByteArray(dummyInfo)}),
+		aer.Events[0].Item)
 }
 
 func TestUpdateState(t *testing.T) {