diff --git a/rostests/apitests/ntdll/RtlDetermineDosPathNameType.c b/rostests/apitests/ntdll/RtlDetermineDosPathNameType.c
index d2e46a34ba0..5a961f8a87f 100644
--- a/rostests/apitests/ntdll/RtlDetermineDosPathNameType.c
+++ b/rostests/apitests/ntdll/RtlDetermineDosPathNameType.c
@@ -146,6 +146,10 @@ START_TEST(RtlDetermineDosPathNameType)
         { L"\\\\",              RtlPathTypeUncAbsolute },
         { L"\\\\\\",            RtlPathTypeUncAbsolute },
         { L"\\\\;",             RtlPathTypeUncAbsolute },
+        { L"\\\\f\\b\\",        RtlPathTypeUncAbsolute },
+        { L"\\\\f\\b",          RtlPathTypeUncAbsolute },
+        { L"\\\\f\\",           RtlPathTypeUncAbsolute },
+        { L"\\\\f",             RtlPathTypeUncAbsolute },
         { L"\\??\\",            RtlPathTypeRooted },
         { L"\\??\\UNC",         RtlPathTypeRooted },
         { L"\\??\\UNC\\",       RtlPathTypeRooted },