diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c
--- a/sys/vm/vm_page.c
+++ b/sys/vm/vm_page.c
@@ -5332,7 +5332,7 @@
 {
 
 	vm_page_assert_busied(m);
-	VM_OBJECT_ASSERT_LOCKED(m->object);
+	VM_OBJECT_ASSERT_WLOCKED(m->object);
 	MPASS(!pmap_page_is_mapped(m));
 
 	if (vm_page_xbusied(m))