diff --git a/pkg/rpcclient/rpc.go b/pkg/rpcclient/rpc.go
index c8b1e7073..3d37a0d54 100644
--- a/pkg/rpcclient/rpc.go
+++ b/pkg/rpcclient/rpc.go
@@ -918,17 +918,21 @@ func (c *Client) SignAndPushP2PNotaryRequest(mainTx *transaction.Transaction, fa
 	}
 	fallbackNetFee += extraNetFee
 
-	dummyAccount := &wallet.Account{Contract: &wallet.Contract{Deployed: false}} // don't call `verify` for Notary contract witness, because it will fail
-	err = c.AddNetworkFee(fallbackTx, fallbackNetFee, dummyAccount, acc)
-	if err != nil {
-		return nil, fmt.Errorf("failed to add network fee: %w", err)
-	}
 	fallbackTx.Scripts = []transaction.Witness{
 		{
 			InvocationScript:   append([]byte{byte(opcode.PUSHDATA1), 64}, make([]byte, 64)...),
 			VerificationScript: []byte{},
 		},
+		{
+			InvocationScript:   []byte{},
+			VerificationScript: acc.GetVerificationScript(),
+		},
 	}
+	fallbackTx.NetworkFee, err = c.CalculateNetworkFee(fallbackTx)
+	if err != nil {
+		return nil, fmt.Errorf("failed to add network fee: %w", err)
+	}
+	fallbackTx.NetworkFee += fallbackNetFee
 	m, err := c.GetNetwork()
 	if err != nil {
 		return nil, fmt.Errorf("failed to sign fallback tx: %w", err)
diff --git a/pkg/services/rpcsrv/server.go b/pkg/services/rpcsrv/server.go
index cda8b0576..5ebfe1e7d 100644
--- a/pkg/services/rpcsrv/server.go
+++ b/pkg/services/rpcsrv/server.go
@@ -765,10 +765,7 @@ func (s *Server) calculateNetworkFee(reqParams params.Params) (interface{}, *neo
 	for i, signer := range tx.Signers {
 		w := tx.Scripts[i]
 		if len(w.VerificationScript) == 0 { // then it still might be a contract-based verification
-			gasConsumed, err := s.chain.VerifyWitness(signer.Account, tx, &tx.Scripts[i], int64(s.config.MaxGasInvoke))
-			if err != nil {
-				return 0, neorpc.NewRPCError("Invalid signature", fmt.Sprintf("contract verification for signer #%d failed: %s", i, err))
-			}
+			gasConsumed, _ := s.chain.VerifyWitness(signer.Account, tx, &tx.Scripts[i], int64(s.config.MaxGasInvoke))
 			netFee += gasConsumed
 			size += io.GetVarSize([]byte{}) + // verification script is empty (contract-based witness)
 				io.GetVarSize(tx.Scripts[i].InvocationScript) // invocation script might not be empty (args for `verify`)