diff --git a/reactos/w32api/include/winternl.h b/reactos/w32api/include/winternl.h
index 1dca97c731f..08612308643 100644
--- a/reactos/w32api/include/winternl.h
+++ b/reactos/w32api/include/winternl.h
@@ -2093,7 +2093,7 @@ NTSTATUS  WINAPI RtlOemStringToUnicodeString(UNICODE_STRING*,const STRING*,BOOLE
 NTSTATUS  WINAPI RtlOemToUnicodeN(LPWSTR,DWORD,LPDWORD,LPCSTR,DWORD);
 DWORD     WINAPI RtlOpenCurrentUser(ACCESS_MASK,PHANDLE);
 
-NTSTATUS  WINAPI RtlPinAtomInAtomTable(RTL_ATOM_TABLE,RTL_ATOM);
+NTSTATUS  WINAPI RtlPinAtomInAtomTable(PRTL_ATOM_TABLE,RTL_ATOM);
 BOOLEAN   WINAPI RtlPrefixString(const STRING*,const STRING*,BOOLEAN);
 BOOLEAN   WINAPI RtlPrefixUnicodeString(const UNICODE_STRING*,const UNICODE_STRING*,BOOLEAN);