diff --git a/src/libcore/os.rs b/src/libcore/os.rs
index 6a44f931c23c364fa9c105f1052353497c9350ea..b4c284cbd821e821f8d4cd42b00f8a4b940a3bc4 100644
--- a/src/libcore/os.rs
+++ b/src/libcore/os.rs
@@ -973,8 +973,8 @@ fn homedir() {
         setenv(~"USERPROFILE", ~"/home/PaloAlto");
         assert os::homedir() == Some(Path("/home/MountainView"));
 
-        option::iter(oldhome, |s| setenv(~"HOME", s));
-        option::iter(olduserprofile,
+        option::iter(&oldhome, |s| setenv(~"HOME", s));
+        option::iter(&olduserprofile,
                                |s| setenv(~"USERPROFILE", s));
     }