diff --git a/routing/routing_tests/opening_hours_serdes_tests.cpp b/routing/routing_tests/opening_hours_serdes_tests.cpp
index 8bee025b03..59f9a6eee1 100644
--- a/routing/routing_tests/opening_hours_serdes_tests.cpp
+++ b/routing/routing_tests/opening_hours_serdes_tests.cpp
@@ -183,6 +183,16 @@ UNIT_CLASS_TEST(BitReaderWriter, OpeningHoursSerDes_EnableTests_2)
   TEST(Serialize("2019 Nov 30 - 2090 Mar 31"), ());
 }
 
+// Test on serialization ranges where start is later than end.
+// It is wrong but still possible data.
+UNIT_CLASS_TEST(BitReaderWriter, OpeningHoursSerDes_CannotSerialize)
+{
+  Enable(OpeningHoursSerDes::Header::Bits::Year);
+  Enable(OpeningHoursSerDes::Header::Bits::Month);
+  TEST(!Serialize("2020 - 2019"), ());
+  TEST(!Serialize("2020 May 20 - 2018 Nov 30"), ());
+}
+
 UNIT_CLASS_TEST(BitReaderWriter, OpeningHoursSerDes_YearOnly)
 {
   Enable(OpeningHoursSerDes::Header::Bits::Year);