diff --git a/reactos/lib/rtl/path.c b/reactos/lib/rtl/path.c
index 5d8d197e07d..238bbc22126 100644
--- a/reactos/lib/rtl/path.c
+++ b/reactos/lib/rtl/path.c
@@ -567,7 +567,7 @@ RtlpDosPathNameToRelativeNtPathName_Ustr(IN BOOLEAN HaveRelative,
         if (NT_SUCCESS(Status))
         {
             /* Set the partial name */
-            *PartName = &NewBuffer[LengthChars - PartNameString.Length];
+            *PartName = &NewBuffer[LengthChars - (PartNameString.Length / sizeof(WCHAR))];
         }
         else
         {