diff --git a/dlls/ntdll/ntdll.spec b/dlls/ntdll/ntdll.spec
index 6bd6579d432..8cba4fa164a 100644
--- a/dlls/ntdll/ntdll.spec
+++ b/dlls/ntdll/ntdll.spec
@@ -1224,7 +1224,7 @@
 # @ stub ZwEnumerateSystemEnvironmentValuesEx
 @ stdcall -private -syscall ZwEnumerateValueKey(long long long ptr long ptr) NtEnumerateValueKey
 @ stub ZwExtendSection
-# @ stub ZwFilterToken
+@ stdcall -private -syscall ZwFilterToken(long long ptr ptr ptr ptr) NtFilterToken
 @ stdcall -private -syscall ZwFindAtom(ptr long ptr) NtFindAtom
 @ stdcall -private -syscall ZwFlushBuffersFile(long ptr) NtFlushBuffersFile
 @ stdcall -private -syscall ZwFlushInstructionCache(long ptr long) NtFlushInstructionCache