diff --git a/reactos/include/ndk/obfuncs.h b/reactos/include/ndk/obfuncs.h
index eb9970e6495..070404c56ef 100644
--- a/reactos/include/ndk/obfuncs.h
+++ b/reactos/include/ndk/obfuncs.h
@@ -118,6 +118,12 @@ ObFindHandleForObject(
     OUT PHANDLE Handle
 );
 
+VOID
+NTAPI
+ObDereferenceObjectDeferDelete(
+    IN PVOID Object
+);
+
 #endif
 
 //