diff --git a/sys/vm/vm_object.h b/sys/vm/vm_object.h
index 61d5672d95fa..d1c35eec6c9e 100644
--- a/sys/vm/vm_object.h
+++ b/sys/vm/vm_object.h
@@ -80,10 +80,10 @@
  *
  *	The root of cached pages pool is protected by both the per-object mutex
  *	and the free pages queue mutex.
- *	On insert in the cache splay tree, the per-object mutex is expected
+ *	On insert in the cache radix trie, the per-object mutex is expected
  *	to be already held and the free pages queue mutex will be
  *	acquired during the operation too.
- *	On remove and lookup from the cache splay tree, only the free
+ *	On remove and lookup from the cache radix trie, only the free
  *	pages queue mutex is expected to be locked.
  *	These rules allow for reliably checking for the presence of cached
  *	pages with only the per-object lock held, thereby reducing contention