diff --git a/dll/ntdll/def/ntdll.spec b/dll/ntdll/def/ntdll.spec
index cef403e8842..90c7b597b56 100644
--- a/dll/ntdll/def/ntdll.spec
+++ b/dll/ntdll/def/ntdll.spec
@@ -461,6 +461,7 @@
 @ stdcall NtQuerySystemEnvironmentValue(ptr ptr long ptr)
 @ stdcall NtQuerySystemEnvironmentValueEx(ptr ptr ptr ptr ptr)
 @ stdcall NtQuerySystemInformation(long long long long)
+@ stdcall -stub -version=0x601+ NtQuerySystemInformationEx(long ptr long ptr long ptr)
 @ stdcall NtQuerySystemTime(ptr)
 @ stdcall NtQueryTimer(ptr long ptr long ptr)
 @ stdcall NtQueryTimerResolution(long long long)