diff --git a/src/software/scaling/extensions.rs b/src/software/scaling/extensions.rs
index 911c952..36e5495 100644
--- a/src/software/scaling/extensions.rs
+++ b/src/software/scaling/extensions.rs
@@ -1,7 +1,3 @@
-use std::ops::Deref;
-
-use libc::c_int;
-use ffi::*;
 use util::format;
 use ::{Picture, decoder, Error};
 use super::{Context, Flags, flag};