diff --git a/reactos/dll/ntdll/def/ntdll.def b/reactos/dll/ntdll/def/ntdll.def
index c0d5eaf6810..14c6d6233aa 100644
--- a/reactos/dll/ntdll/def/ntdll.def
+++ b/reactos/dll/ntdll/def/ntdll.def
@@ -601,6 +601,7 @@ RtlQueryRegistryValues@20
 RtlQuerySecurityObject@20
 RtlQueryTagHeap@20
 RtlQueryTimeZoneInformation@4
+RtlQueueWorkItem@12
 RtlRaiseException@4
 RtlRaiseStatus@4
 RtlRandom@4