diff --git a/android.rs b/android.rs
index a4b03c5..e114104 100644
--- a/android.rs
+++ b/android.rs
@@ -26,9 +26,9 @@ impl AlertMethods for Alert {
         // TODO
     }
 
-    fn prompt_value(&self) -> ~str {
+    fn prompt_value(&self) -> String {
         // TODO
-        "".to_owned()
+        "".to_string()
     }
 }