diff --git a/src/librustc/middle/trans/datum.rs b/src/librustc/middle/trans/datum.rs
index 374bb23f2cb5..8055d919ffd9 100644
--- a/src/librustc/middle/trans/datum.rs
+++ b/src/librustc/middle/trans/datum.rs
@@ -101,7 +101,6 @@ use middle::ty;
 use util::common::indenter;
 use util::ppaux::ty_to_str;
 
-use core::container::Set; // XXX: this should not be necessary
 use core::to_bytes;
 use syntax::ast;
 use syntax::codemap::span;