1 files changed, 2 insertions, 2 deletions
diff --git a/src/libstd/cleanup.rs b/src/libstd/cleanup.rs
index a9070a7a7a2..7bbc8bc32fa 100644
--- a/src/libstd/cleanup.rs
+++ b/src/libstd/cleanup.rs
@@ -11,7 +11,7 @@
 #[doc(hidden)];
 
 use libc::c_void;
-use ptr::null;
+use ptr;
 use unstable::intrinsics::TyDesc;
 use unstable::raw;
 
@@ -37,7 +37,7 @@ unsafe fn each_live_alloc(read_next_before: bool,
     use rt::local_heap;
 
     let mut box = local_heap::live_allocs();
-    while box != null() {
+    while box != ptr::mut_null() {
         let next_before = (*box).next;
         let uniq = (*box).ref_count == managed::RC_MANAGED_UNIQUE;