diff --git a/src/string.rs b/src/string.rs
index a8bd6d445025df11645922f80c1aebb88b1eb497..0ff576af9ced57b1324cc530c827cbc1b7618ab7 100644
--- a/src/string.rs
+++ b/src/string.rs
@@ -711,7 +711,7 @@ impl String {
         match str::from_utf8(&vec) {
             Ok(..) => {
                 let boxed = vec.into_boxed_slice();
-                let (capacity, len, data) = (boxed.len(), boxed.len(), Box::into_raw(boxed) as _);
+                let (capacity, len, data) = (boxed.len(), boxed.len(), std::boxed::Box::into_raw(boxed) as _);
                 Ok(String {
                     len,
                     inner: Inner::Heap {