diff --git a/util/proto/marshal_test.go b/util/proto/marshal_test.go
index 1cd7005..98422fc 100644
--- a/util/proto/marshal_test.go
+++ b/util/proto/marshal_test.go
@@ -76,6 +76,13 @@ func TestStableMarshalSingle(t *testing.T) {
 				var actual test.Primitives
 				require.NoError(t, protojson.Unmarshal(r, &actual))
 
+				t.Run("protojson compatibility", func(t *testing.T) {
+					t.Skip()
+					data, err := protojson.Marshal(&actual)
+					require.NoError(t, err)
+					require.JSONEq(t, string(data), string(r))
+				})
+
 				var actualFrostfs generated.Primitives
 				require.NoError(t, actualFrostfs.UnmarshalJSON(r))
 				require.Equal(t, tc.input, &actualFrostfs)