diff --git a/src/input.rs b/src/input.rs
index 6f6dd171..5c8ecf46 100644
--- a/src/input.rs
+++ b/src/input.rs
@@ -49,7 +49,7 @@ impl<R: Read> Iterator for EventsAndRaw<R> {
     type Item = Result<(Event, Vec<u8>), io::Error>;
 
     fn next(&mut self) -> Option<Result<(Event, Vec<u8>), io::Error>> {
-        let mut source = &mut self.source;
+        let source = &mut self.source;
 
         if let Some(c) = self.leftover {
             // we have a leftover byte, use it