diff --git a/ntoskrnl/ob/oblife.c b/ntoskrnl/ob/oblife.c
index f0ae6aafee3..10f010cea49 100644
--- a/ntoskrnl/ob/oblife.c
+++ b/ntoskrnl/ob/oblife.c
@@ -946,7 +946,8 @@ NTSTATUS
 NTAPI
 ObQueryTypeInfo(
     _In_ POBJECT_TYPE ObjectType,
-    _Out_writes_bytes_(Length) POBJECT_TYPE_INFORMATION ObjectTypeInfo,
+    _Out_writes_bytes_to_(Length, *ReturnLength)
+        POBJECT_TYPE_INFORMATION ObjectTypeInfo,
     _In_ ULONG Length,
     _Out_ PULONG ReturnLength)
 {