diff --git a/src/tiff.rs b/src/tiff.rs
index ca406a4..379f708 100644
--- a/src/tiff.rs
+++ b/src/tiff.rs
@@ -24,7 +24,8 @@
 // SUCH DAMAGE.
 //
 
-use std::fmt;
+use core::cmp::{min, max};
+use core::fmt;
 
 use mutate_once::MutOnce;