diff --git a/sys/vm/vm_object.c b/sys/vm/vm_object.c
--- a/sys/vm/vm_object.c
+++ b/sys/vm/vm_object.c
@@ -336,7 +336,7 @@
 
 	if (object->type == OBJT_DEAD)
 		return (KERN_INVALID_ARGUMENT);
-	if (!TAILQ_EMPTY(&object->memq))
+	if (!vm_radix_is_empty(&object->rtree))
 		return (KERN_FAILURE);
 
 	object->memattr = memattr;