diff --git a/src/libcore/raw.rs b/src/libcore/raw.rs
index b072b0a9646edd16c94cf70cf13bae9eb2e8a347..ded52ff07785ebd100c3c251fda7999db367ed2c 100644
--- a/src/libcore/raw.rs
+++ b/src/libcore/raw.rs
@@ -18,6 +18,8 @@
 //!
 //! Their definition should always match the ABI defined in `rustc::back::abi`.
 
+use clone::Clone;
+use marker::Copy;
 use mem;
 
 /// The representation of a slice like `&[T]`.