1 files changed, 1 insertions, 1 deletions
diff --git a/src/libcore/hash/mod.rs b/src/libcore/hash/mod.rs
index edc4b7e10ee..4b545435ea1 100644
--- a/src/libcore/hash/mod.rs
+++ b/src/libcore/hash/mod.rs
@@ -182,7 +182,7 @@ mod impls {
                 }
 
                 fn hash_slice<H: Hasher>(data: &[$ty], state: &mut H) {
-                    let newlen = data.len() * ::$ty::BYTES;
+                    let newlen = data.len() * ::$ty::BYTES as usize;
                     let ptr = data.as_ptr() as *const u8;
                     state.write(unsafe { slice::from_raw_parts(ptr, newlen) })
                 }