diff --git a/internal/testchain/transaction.go b/internal/testchain/transaction.go
index 1d0d8570d..30529c73a 100644
--- a/internal/testchain/transaction.go
+++ b/internal/testchain/transaction.go
@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"fmt"
 	gio "io"
+	"strings"
 
 	"github.com/nspcc-dev/neo-go/cli/smartcontract"
 	"github.com/nspcc-dev/neo-go/pkg/compiler"
@@ -50,18 +51,14 @@ func NewTransferFromOwner(bc blockchainer.Blockchainer, contractHash, to util.Ui
 	return tx, SignTx(bc, tx)
 }
 
-// NewDeployTx returns new deployment tx for contract with name with Go code read from r.
+// NewDeployTx returns new deployment for contract with source from r and name equal to
+// filename without '.go' suffix.
 func NewDeployTx(bc blockchainer.Blockchainer, name string, sender util.Uint160, r gio.Reader, confFile *string) (*transaction.Transaction, util.Uint160, []byte, error) {
 	// nef.NewFile() cares about version a lot.
 	config.Version = "0.90.0-test"
 
-	ne, di, err := compiler.CompileWithOptions(name, r, nil)
-	if err != nil {
-		return nil, util.Uint160{}, nil, err
-	}
-
 	o := &compiler.Options{
-		Name:            name,
+		Name:            strings.TrimSuffix(name, ".go"),
 		NoStandardCheck: true,
 		NoEventsCheck:   true,
 	}
@@ -79,6 +76,12 @@ func NewDeployTx(bc blockchainer.Blockchainer, name string, sender util.Uint160,
 		}
 		o.SafeMethods = conf.SafeMethods
 	}
+
+	ne, di, err := compiler.CompileWithOptions(name, r, o)
+	if err != nil {
+		return nil, util.Uint160{}, nil, err
+	}
+
 	m, err := compiler.CreateManifest(di, o)
 	if err != nil {
 		return nil, util.Uint160{}, nil, fmt.Errorf("failed to create manifest: %w", err)
@@ -100,7 +103,7 @@ func NewDeployTx(bc blockchainer.Blockchainer, name string, sender util.Uint160,
 
 	tx := transaction.New(buf.Bytes(), 100*native.GASFactor)
 	tx.Signers = []transaction.Signer{{Account: sender}}
-	h := state.CreateContractHash(tx.Sender(), ne.Checksum, name)
+	h := state.CreateContractHash(tx.Sender(), ne.Checksum, m.Name)
 
 	return tx, h, ne.Script, nil
 }
diff --git a/pkg/compiler/compiler_test.go b/pkg/compiler/compiler_test.go
index 47e9c2933..0a82eb10b 100644
--- a/pkg/compiler/compiler_test.go
+++ b/pkg/compiler/compiler_test.go
@@ -93,7 +93,7 @@ func compileFile(src string) error {
 
 func TestOnPayableChecks(t *testing.T) {
 	compileAndCheck := func(t *testing.T, src string) error {
-		_, di, err := compiler.CompileWithOptions("payable", strings.NewReader(src), nil)
+		_, di, err := compiler.CompileWithOptions("payable.go", strings.NewReader(src), nil)
 		require.NoError(t, err)
 		_, err = compiler.CreateManifest(di, &compiler.Options{})
 		return err
@@ -129,7 +129,8 @@ func TestSafeMethodWarnings(t *testing.T) {
 	src := `package payable
 		func Main() int { return 1 }`
 
-	_, di, err := compiler.CompileWithOptions("eventTest", strings.NewReader(src), nil)
+	_, di, err := compiler.CompileWithOptions("eventTest.go", strings.NewReader(src),
+		&compiler.Options{Name: "eventTest"})
 	require.NoError(t, err)
 
 	_, err = compiler.CreateManifest(di, &compiler.Options{SafeMethods: []string{"main"}})
@@ -144,7 +145,7 @@ func TestEventWarnings(t *testing.T) {
 		import "github.com/nspcc-dev/neo-go/pkg/interop/runtime"
 		func Main() { runtime.Notify("Event", 1) }`
 
-	_, di, err := compiler.CompileWithOptions("eventTest", strings.NewReader(src), nil)
+	_, di, err := compiler.CompileWithOptions("eventTest.go", strings.NewReader(src), nil)
 	require.NoError(t, err)
 
 	t.Run("event it missing from config", func(t *testing.T) {
@@ -188,7 +189,7 @@ func TestEventWarnings(t *testing.T) {
 				return notify.Value
 			}`
 
-			_, di, err := compiler.CompileWithOptions("eventTest", strings.NewReader(src), nil)
+			_, di, err := compiler.CompileWithOptions("eventTest.go", strings.NewReader(src), &compiler.Options{Name: "eventTest"})
 			require.NoError(t, err)
 
 			_, err = compiler.CreateManifest(di, &compiler.Options{NoEventsCheck: true})
@@ -202,7 +203,8 @@ func TestEventWarnings(t *testing.T) {
 				return 42
 			}`
 
-			_, di, err := compiler.CompileWithOptions("eventTest", strings.NewReader(src), nil)
+			_, di, err := compiler.CompileWithOptions("eventTest.go",
+				strings.NewReader(src), &compiler.Options{Name: "eventTest"})
 			require.NoError(t, err)
 
 			_, err = compiler.CreateManifest(di, &compiler.Options{})
@@ -224,12 +226,12 @@ func TestNotifyInVerify(t *testing.T) {
 	for _, name := range []string{"Notify", "Log"} {
 		t.Run(name, func(t *testing.T) {
 			src := fmt.Sprintf(srcTmpl, name)
-			_, _, err := compiler.CompileWithOptions("eventTest", strings.NewReader(src),
+			_, _, err := compiler.CompileWithOptions("eventTest.go", strings.NewReader(src),
 				&compiler.Options{ContractEvents: []manifest.Event{{Name: "Event"}}})
 			require.Error(t, err)
 
 			t.Run("suppress", func(t *testing.T) {
-				_, _, err := compiler.CompileWithOptions("eventTest", strings.NewReader(src),
+				_, _, err := compiler.CompileWithOptions("eventTest.go", strings.NewReader(src),
 					&compiler.Options{NoEventsCheck: true})
 				require.NoError(t, err)
 			})
@@ -258,7 +260,7 @@ func TestInvokedContractsPermissons(t *testing.T) {
 				return 0
 			}`
 
-		_, di, err := compiler.CompileWithOptions("permissionTest", strings.NewReader(src), &compiler.Options{})
+		_, di, err := compiler.CompileWithOptions("permissionTest.go", strings.NewReader(src), nil)
 		require.NoError(t, err)
 
 		var nh util.Uint160
@@ -302,7 +304,7 @@ func TestInvokedContractsPermissons(t *testing.T) {
 				contract.Call(runh.RuntimeHash(), "method4", contract.All)
 			}`, hashStr)
 
-		_, di, err := compiler.CompileWithOptions("permissionTest", strings.NewReader(src), &compiler.Options{})
+		_, di, err := compiler.CompileWithOptions("permissionTest.go", strings.NewReader(src), nil)
 		require.NoError(t, err)
 
 		var h util.Uint160
diff --git a/pkg/compiler/debug_test.go b/pkg/compiler/debug_test.go
index 4d0994cf4..447d4490f 100644
--- a/pkg/compiler/debug_test.go
+++ b/pkg/compiler/debug_test.go
@@ -365,7 +365,7 @@ func TestManifestOverload(t *testing.T) {
 		return 4
 	}`
 
-	_, di, err := CompileWithOptions("foo", strings.NewReader(src), nil)
+	_, di, err := CompileWithOptions("foo.go", strings.NewReader(src), nil)
 	require.NoError(t, err)
 
 	m, err := di.ConvertToManifest(&Options{Overloads: map[string]string{"add3Aux": "add3"}})
diff --git a/pkg/compiler/function_call_test.go b/pkg/compiler/function_call_test.go
index c017fa542..5a265591b 100644
--- a/pkg/compiler/function_call_test.go
+++ b/pkg/compiler/function_call_test.go
@@ -302,7 +302,7 @@ func TestJumpOptimize(t *testing.T) {
 	func Main() int {
 		return Get3()
 	}`
-	b, di, err := compiler.CompileWithOptions("", strings.NewReader(src), nil)
+	b, di, err := compiler.CompileWithOptions("file.go", strings.NewReader(src), nil)
 	require.NoError(t, err)
 	require.Equal(t, 6, len(di.Methods))
 	for _, mi := range di.Methods {
@@ -333,7 +333,7 @@ func TestUnusedFunctions(t *testing.T) {
 			return nestedcall.X
 		}`
 
-		b, err := compiler.Compile("foo", strings.NewReader(src))
+		b, err := compiler.Compile("foo.go", strings.NewReader(src))
 		require.NoError(t, err)
 		require.Equal(t, 3, len(b)) // PUSHINT8 (42) + RET
 		eval(t, src, big.NewInt(42))
@@ -346,7 +346,7 @@ func TestUnusedFunctions(t *testing.T) {
 			return inner.N()
 		}`
 
-		_, err := compiler.Compile("foo", strings.NewReader(src))
+		_, err := compiler.Compile("foo.go", strings.NewReader(src))
 		require.NoError(t, err)
 		eval(t, src, big.NewInt(65))
 	})
@@ -359,7 +359,7 @@ func TestUnusedFunctions(t *testing.T) {
 			return t.Method()
 		}`
 
-		_, err := compiler.Compile("foo", strings.NewReader(src))
+		_, err := compiler.Compile("foo.go", strings.NewReader(src))
 		require.NoError(t, err)
 		eval(t, src, big.NewInt(2231))
 	})
diff --git a/pkg/compiler/syscall_test.go b/pkg/compiler/syscall_test.go
index e553e01c4..fe6ee2626 100644
--- a/pkg/compiler/syscall_test.go
+++ b/pkg/compiler/syscall_test.go
@@ -139,7 +139,7 @@ func runSyscallTestCase(t *testing.T, ic *interop.Context, goName string, tc sys
 	}
 	ss := strings.Split(goName, ".")
 	src := fmt.Sprintf(srcTmpl, ss[0], goName, strings.Join(tc.params, ", "))
-	b, _, err := compiler.CompileWithOptions("foo", strings.NewReader(src), nil)
+	b, _, err := compiler.CompileWithOptions("foo.go", strings.NewReader(src), nil)
 	require.NoError(t, err)
 
 	v := ic.SpawnVM()
diff --git a/pkg/core/blockchain_test.go b/pkg/core/blockchain_test.go
index 89f13c864..8d8b14e28 100644
--- a/pkg/core/blockchain_test.go
+++ b/pkg/core/blockchain_test.go
@@ -1257,7 +1257,7 @@ func TestIsTxStillRelevant(t *testing.T) {
 			currentHeight := contract.Call(addr, "currentIndex", contract.ReadStates)
 			return currentHeight.(int) < %d
 		}`, bc.BlockHeight()+2) // deploy + next block
-		txDeploy, h, _, err := testchain.NewDeployTx(bc, "TestVerify", neoOwner, strings.NewReader(src), nil)
+		txDeploy, h, _, err := testchain.NewDeployTx(bc, "TestVerify.go", neoOwner, strings.NewReader(src), nil)
 		require.NoError(t, err)
 		txDeploy.ValidUntilBlock = bc.BlockHeight() + 1
 		addSigners(neoOwner, txDeploy)
diff --git a/pkg/core/helper_test.go b/pkg/core/helper_test.go
index 633bd6eb3..3b776966e 100644
--- a/pkg/core/helper_test.go
+++ b/pkg/core/helper_test.go
@@ -187,7 +187,7 @@ func TestBug1728(t *testing.T) {
 	func _deploy(_ interface{}, isUpdate bool) {
 		runtime.Log("Deploy")
 	}`
-	nf, di, err := compiler.CompileWithOptions("foo", strings.NewReader(src), nil)
+	nf, di, err := compiler.CompileWithOptions("foo.go", strings.NewReader(src), nil)
 	require.NoError(t, err)
 	m, err := di.ConvertToManifest(&compiler.Options{Name: "TestContract"})
 	require.NoError(t, err)
diff --git a/pkg/vm/cli/cli.go b/pkg/vm/cli/cli.go
index ba2186a74..5b4878804 100644
--- a/pkg/vm/cli/cli.go
+++ b/pkg/vm/cli/cli.go
@@ -394,7 +394,9 @@ func handleLoadGo(c *ishell.Context) {
 		c.Err(fmt.Errorf("%w: <file>", ErrMissingParameter))
 		return
 	}
-	b, di, err := compiler.CompileWithOptions(c.Args[0], nil, nil)
+
+	name := strings.TrimSuffix(c.Args[0], ".go")
+	b, di, err := compiler.CompileWithOptions(c.Args[0], nil, &compiler.Options{Name: name})
 	if err != nil {
 		c.Err(err)
 		return
diff --git a/pkg/vm/cli/cli_test.go b/pkg/vm/cli/cli_test.go
index 3dcb3afd2..f6840c30d 100644
--- a/pkg/vm/cli/cli_test.go
+++ b/pkg/vm/cli/cli_test.go
@@ -243,7 +243,7 @@ func TestLoad(t *testing.T) {
 	t.Run("loadnef", func(t *testing.T) {
 		config.Version = "0.92.0-test"
 
-		nefFile, di, err := compiler.CompileWithOptions("test", strings.NewReader(src), nil)
+		nefFile, di, err := compiler.CompileWithOptions("test.go", strings.NewReader(src), nil)
 		require.NoError(t, err)
 		filename := filepath.Join(tmpDir, "vmtestcontract.nef")
 		rawNef, err := nefFile.Bytes()
diff --git a/scripts/gendump/main.go b/scripts/gendump/main.go
index 15712d532..579e2fa02 100644
--- a/scripts/gendump/main.go
+++ b/scripts/gendump/main.go
@@ -75,7 +75,7 @@ func main() {
 	handleError("can't tranfser GAS", err)
 	lastBlock = addBlock(bc, lastBlock, valScript, txMoveNeo, txMoveGas)
 
-	tx, contractHash, _, err := testchain.NewDeployTx(bc, "DumpContract", h, strings.NewReader(contract), nil)
+	tx, contractHash, _, err := testchain.NewDeployTx(bc, "DumpContract.go", h, strings.NewReader(contract), nil)
 	handleError("can't create deploy tx", err)
 	tx.NetworkFee = 10_000_000
 	tx.ValidUntilBlock = bc.BlockHeight() + 1