diff --git a/src/librustc_driver/driver.rs b/src/librustc_driver/driver.rs
index f7815a58d062..f93c543543c0 100644
--- a/src/librustc_driver/driver.rs
+++ b/src/librustc_driver/driver.rs
@@ -482,7 +482,7 @@ pub fn phase_2_configure_and_expand(sess: &Session,
                 crate_name: crate_name.to_string(),
                 features: Some(&features),
                 recursion_limit: sess.recursion_limit.get(),
-                trace_mac: sess.opt.debugging_opts.trace_macros,
+                trace_mac: sess.opts.debugging_opts.trace_macros,
             };
             let ret = syntax::ext::expand::expand_crate(&sess.parse_sess,
                                               cfg,