diff --git a/src/libcore/ops.rs b/src/libcore/ops.rs
index 3c6f5638d8d..22c363ba9c0 100644
--- a/src/libcore/ops.rs
+++ b/src/libcore/ops.rs
@@ -15,7 +15,7 @@
 
 #[lang="drop"]
 pub trait Drop {
-    fn finalize(&self);  // XXX: Rename to "drop"? --pcwalton
+    fn finalize(&self);  // FIXME(#4332): Rename to "drop"? --pcwalton
 }
 
 #[lang="add"]