diff --git a/src/librustc_incremental/lib.rs b/src/librustc_incremental/lib.rs
index 3af8fe5cc5f..005146d91ea 100644
--- a/src/librustc_incremental/lib.rs
+++ b/src/librustc_incremental/lib.rs
@@ -24,7 +24,7 @@
 
 extern crate graphviz;
 extern crate rbml;
-extern crate rustc;
+#[macro_use] extern crate rustc;
 extern crate rustc_data_structures;
 extern crate serialize as rustc_serialize;