diff --git a/pkg/core/native/contract.go b/pkg/core/native/contract.go
index 3338551ab..55ff6230a 100644
--- a/pkg/core/native/contract.go
+++ b/pkg/core/native/contract.go
@@ -76,8 +76,7 @@ func (cs *Contracts) GetNativeInterop(ic *interop.Context) func(uint32) *vm.Inte
 	return func(id uint32) *vm.InteropFuncPrice {
 		if c := cs.ByID(id); c != nil {
 			return &vm.InteropFuncPrice{
-				Func:  getNativeInterop(ic, c),
-				Price: 0, // TODO price func
+				Func: getNativeInterop(ic, c),
 			}
 		}
 		return nil
@@ -100,6 +99,9 @@ func getNativeInterop(ic *interop.Context, c interop.Contract) func(v *vm.VM) er
 		if !v.Context().GetCallFlags().Has(m.RequiredFlags) {
 			return errors.New("missing call flags")
 		}
+		if !v.AddGas(util.Fixed8(m.Price)) {
+			return errors.New("gas limit exceeded")
+		}
 		result := m.Func(ic, args)
 		v.Estack().PushVal(result)
 		return nil
diff --git a/pkg/core/native_contract_test.go b/pkg/core/native_contract_test.go
index b3eed1ae7..a08556a0d 100644
--- a/pkg/core/native_contract_test.go
+++ b/pkg/core/native_contract_test.go
@@ -47,6 +47,8 @@ func (bc *Blockchain) registerNative(c interop.Contract) {
 	bc.contracts.Contracts = append(bc.contracts.Contracts, c)
 }
 
+const testSumPrice = 1000000
+
 func newTestNative() *testNative {
 	tn := &testNative{
 		meta:   *interop.NewContractMD("Test.Native.Sum"),
@@ -62,7 +64,7 @@ func newTestNative() *testNative {
 	}
 	md := &interop.MethodAndPrice{
 		Func:          tn.sum,
-		Price:         1,
+		Price:         testSumPrice,
 		RequiredFlags: smartcontract.NoneFlag,
 	}
 	tn.meta.AddMethod(md, desc, true)
@@ -99,7 +101,8 @@ func TestNativeContract_Invoke(t *testing.T) {
 	w := io.NewBufBinWriter()
 	emit.AppCallWithOperationAndArgs(w.BinWriter, tn.Metadata().Hash, "sum", int64(14), int64(28))
 	script := w.Bytes()
-	tx := transaction.New(chain.GetConfig().Magic, script, 0)
+	// System.Contract.Call + "sum" itself + opcodes for pushing arguments (PACK is 7000)
+	tx := transaction.New(chain.GetConfig().Magic, script, testSumPrice*2+10000)
 	validUntil := chain.blockHeight + 1
 	tx.ValidUntilBlock = validUntil
 	require.NoError(t, addSender(tx))