diff --git a/src/libcore/fmt/mod.rs b/src/libcore/fmt/mod.rs
index 04676c0c9c8b4..628bf654873c7 100644
--- a/src/libcore/fmt/mod.rs
+++ b/src/libcore/fmt/mod.rs
@@ -356,7 +356,7 @@ impl<'a> Display for Arguments<'a> {
 /// `Debug` implementations using either `derive` or the debug builder API
 /// on `Formatter` support pretty printing using the alternate flag: `{:#?}`.
 ///
-/// [debug_struct]: ../std/fmt/struct.Formatter.html#method.debug_struct
+/// [debug_struct]: ../../std/fmt/struct.Formatter.html#method.debug_struct
 ///
 /// Pretty printing with `#?`:
 ///
diff --git a/src/librustc_metadata/loader.rs b/src/librustc_metadata/loader.rs
index 81788e08c7ef2..d1892b87f8bcc 100644
--- a/src/librustc_metadata/loader.rs
+++ b/src/librustc_metadata/loader.rs
@@ -664,6 +664,8 @@ impl<'a> Context<'a> {
                 }
                 sess.err(&format!("extern location for {} is of an unknown type: {}",
                                  self.crate_name, loc.display()));
+                sess.help(&format!("file name should be lib*.rlib or {}*.{}",
+                                   dylibname.0, dylibname.1));
                 false
             });