Index: /trunk/src/VBox/GuestHost/DragAndDrop/DnDURIObject.cpp
===================================================================
--- /trunk/src/VBox/GuestHost/DragAndDrop/DnDURIObject.cpp	(revision 74672)
+++ /trunk/src/VBox/GuestHost/DragAndDrop/DnDURIObject.cpp	(revision 74673)
@@ -179,5 +179,5 @@
                          uint64_t fOpen /* = 0 */, uint32_t fMode /* = 0 */, DNDURIOBJECTFLAGS fFlags /* = DNDURIOBJECT_FLAGS_NONE */)
 {
-    AssertReturn(fFlags & DNDURIOBJECT_FLAGS_VALID_MASK, VERR_INVALID_PARAMETER);
+    AssertReturn(!(fFlags & ~DNDURIOBJECT_FLAGS_VALID_MASK), VERR_INVALID_FLAGS);
     RT_NOREF1(fFlags);