diff --git a/pkg/smartcontract/manifest/standard/comply.go b/pkg/smartcontract/manifest/standard/comply.go
index afd6e4000..b629723bc 100644
--- a/pkg/smartcontract/manifest/standard/comply.go
+++ b/pkg/smartcontract/manifest/standard/comply.go
@@ -14,6 +14,7 @@ var (
 	ErrInvalidReturnType     = errors.New("invalid return type")
 	ErrInvalidParameterCount = errors.New("invalid parameter count")
 	ErrInvalidParameterType  = errors.New("invalid parameter type")
+	ErrSafeMethodMismatch    = errors.New("method has wrong safe flag")
 )
 
 var checks = map[string]*manifest.Manifest{
@@ -55,6 +56,9 @@ func Comply(m, st *manifest.Manifest) error {
 					name, i, stm.Parameters[i].Type, md.Parameters[i].Type)
 			}
 		}
+		if stm.Safe != md.Safe {
+			return fmt.Errorf("%w: expected %t", ErrSafeMethodMismatch, stm.Safe)
+		}
 	}
 	for _, ste := range st.ABI.Events {
 		name := ste.Name
diff --git a/pkg/smartcontract/manifest/standard/comply_test.go b/pkg/smartcontract/manifest/standard/comply_test.go
index 34e0b52fd..8a1851d42 100644
--- a/pkg/smartcontract/manifest/standard/comply_test.go
+++ b/pkg/smartcontract/manifest/standard/comply_test.go
@@ -20,6 +20,7 @@ func fooMethodBarEvent() *manifest.Manifest {
 						{Type: smartcontract.PublicKeyType},
 					},
 					ReturnType: smartcontract.IntegerType,
+					Safe:       true,
 				},
 			},
 			Events: []manifest.Event{
@@ -87,6 +88,13 @@ func TestMissingEvent(t *testing.T) {
 	require.True(t, errors.Is(err, ErrEventMissing))
 }
 
+func TestSafeFlag(t *testing.T) {
+	m := fooMethodBarEvent()
+	m.ABI.GetMethod("foo").Safe = false
+	err := Comply(m, fooMethodBarEvent())
+	require.True(t, errors.Is(err, ErrSafeMethodMismatch))
+}
+
 func TestComplyValid(t *testing.T) {
 	m := fooMethodBarEvent()
 	m.ABI.Methods = append(m.ABI.Methods, manifest.Method{