diff --git a/src/annotate.rs b/src/annotate.rs
index 32a8330..4d21e4e 100644
--- a/src/annotate.rs
+++ b/src/annotate.rs
@@ -1,3 +1,4 @@
+use std::fs;
 use std::fs::{File,OpenOptions};
 use std::io::{BufRead, BufReader, Write};
 use std::error::Error;