diff --git a/components/net/data_loader.rs b/components/net/data_loader.rs
index 43d59fcf33a..39b0cf628d2 100644
--- a/components/net/data_loader.rs
+++ b/components/net/data_loader.rs
@@ -66,10 +66,7 @@ fn load(load_data: LoadData, start_chan: Sender<LoadResponse>) {
         // FIXME(#2909): It’s unclear what to do with non-alphabet characters,
         // but Acid 3 apparently depends on spaces being ignored.
         let bytes = bytes.move_iter().filter(|&b| b != ' ' as u8).collect::<Vec<u8>>();
-        // FIXME(#2877): use bytes.as_slice().from_base64() when we upgrade to a Rust version
-        // that includes https://github.com/rust-lang/rust/pull/15810
-        let fake_utf8 = unsafe { str::raw::from_utf8(bytes.as_slice()) };
-        match fake_utf8.from_base64() {
+        match bytes.as_slice().from_base64() {
             Err(..) => {
                 progress_chan.send(Done(Err("non-base64 data uri".to_string())));
             }