diff --git a/src/libsyntax/lib.rs b/src/libsyntax/lib.rs
index dacb0d811cedb..f2b8f23ee8530 100644
--- a/src/libsyntax/lib.rs
+++ b/src/libsyntax/lib.rs
@@ -151,7 +151,7 @@ pub mod source_map;
 pub mod config;
 pub mod entry;
 pub mod feature_gate;
-#[path="fold.rs"] pub mod mut_visit;    // temporary
+pub mod mut_visit;
 pub mod parse;
 pub mod ptr;
 pub mod show_span;
diff --git a/src/libsyntax/fold.rs b/src/libsyntax/mut_visit.rs
similarity index 100%
rename from src/libsyntax/fold.rs
rename to src/libsyntax/mut_visit.rs