diff --git a/macos.rs b/macos.rs
index d64f849..dc35091 100644
--- a/macos.rs
+++ b/macos.rs
@@ -13,6 +13,7 @@ use cocoa::appkit::{NSPoint, NSRect, NSSize};
 use cocoa::base::{objc_getClass, sel_registerName};
 use cocoa::base;
 use std::cast::{transmute, transmute_copy};
+use std::from_str::FromStr;
 use core_foundation::base::TCFType;
 use core_foundation::string::CFString;