diff --git a/reactos/dll/ntdll/def/ntdll.spec b/reactos/dll/ntdll/def/ntdll.spec
index 867594f1b29..6d35f16edff 100644
--- a/reactos/dll/ntdll/def/ntdll.spec
+++ b/reactos/dll/ntdll/def/ntdll.spec
@@ -411,7 +411,6 @@
 ;@ stdcall RtlAbortRXact
 @ stdcall RtlAbsoluteToSelfRelativeSD(ptr ptr ptr)
 @ stdcall RtlAcquirePebLock()
-@ stdcall RtlAdjustPrivilege(long long long ptr)
 @ stdcall RtlAcquireResourceExclusive(ptr long)
 @ stdcall RtlAcquireResourceShared(ptr long)
 @ stdcall RtlAcquireSRWLockExclusive(ptr)