diff --git a/src/stdio/src/printf.rs b/src/stdio/src/printf.rs
index 093ee82c122d6f902e00d8f9c05f2653dcdbc432..fee1c1156d60af5d615a08f828dbf22253af1c63 100644
--- a/src/stdio/src/printf.rs
+++ b/src/stdio/src/printf.rs
@@ -1,4 +1,4 @@
-use core::{fmt, mem, slice, str};
+use core::{fmt, slice, str};
 
 use platform::types::*;
 use vl::VaList;