diff --git a/http-body/src/size_hint.rs b/http-body/src/size_hint.rs
index 00a8f19..2cad79d 100644
--- a/http-body/src/size_hint.rs
+++ b/http-body/src/size_hint.rs
@@ -1,5 +1,3 @@
-use std::u64;
-
 /// A `Body` size hint
 ///
 /// The default implementation returns: