diff --git a/src/librustc/infer/error_reporting/different_lifetimes.rs b/src/librustc/infer/error_reporting/different_lifetimes.rs
index e9866545f97..aca6db1f9a0 100644
--- a/src/librustc/infer/error_reporting/different_lifetimes.rs
+++ b/src/librustc/infer/error_reporting/different_lifetimes.rs
@@ -110,7 +110,7 @@ impl<'a, 'gcx, 'tcx> InferCtxt<'a, 'gcx, 'tcx> {
                 };
                 (ty_sup.span, ty_sub.span, main_label_1, span_label_1)
             }
-            
+
             (Some(ret_span), _) => {
                 (ty_sub.span,
                  ret_span,