diff --git a/reactos/include/ndk/rtlfuncs.h b/reactos/include/ndk/rtlfuncs.h
index e1ce04c1c35..3205fa1a7c8 100644
--- a/reactos/include/ndk/rtlfuncs.h
+++ b/reactos/include/ndk/rtlfuncs.h
@@ -2728,17 +2728,11 @@ RtlGetFullPathName_UstrEx(
 NTSYSAPI
 NTSTATUS
 NTAPI
-RtlGetLengthWithoutTrailingPathSeparators(
-    _In_ ULONG Flags,
+RtlGetLengthWithoutTrailingPathSeperators(
+    _Reserved_ ULONG Flags,
     _In_ PCUNICODE_STRING PathString,
     _Out_ PULONG Length
 );
-/*
- * NOTE: the export is called RtlGetLengthWithoutTrailingPathSeperators
- *        (with a 'e' instead of a 'a' in "Seperators").
- */
-#define RtlGetLengthWithoutTrailingPathSeperators   \
-        RtlGetLengthWithoutTrailingPathSeparators
 
 NTSYSAPI
 ULONG