diff --git a/src/librustc/middle/entry.rs b/src/librustc/middle/entry.rs
index 0a363fddd5312..11bde922f47f2 100644
--- a/src/librustc/middle/entry.rs
+++ b/src/librustc/middle/entry.rs
@@ -132,8 +132,13 @@ fn find_item(item: &Item, ctxt: &mut EntryContext, at_root: bool) {
             if ctxt.start_fn.is_none() {
                 ctxt.start_fn = Some((item.id, item.span));
             } else {
-                span_err!(ctxt.session, item.span, E0138,
-                          "multiple 'start' functions");
+                struct_span_err!(
+                    ctxt.session, item.span, E0138,
+                    "multiple 'start' functions")
+                    .span_label(ctxt.start_fn.unwrap().1,
+                                &format!("previous `start` function here"))
+                    .span_label(item.span, &format!("multiple `start` functions"))
+                    .emit();
             }
         },
         EntryPointType::None => ()
diff --git a/src/test/compile-fail/E0138.rs b/src/test/compile-fail/E0138.rs
index 97d85e5e71e08..d4630d7c2effb 100644
--- a/src/test/compile-fail/E0138.rs
+++ b/src/test/compile-fail/E0138.rs
@@ -12,6 +12,9 @@
 
 #[start]
 fn foo(argc: isize, argv: *const *const u8) -> isize {}
+//~^ NOTE previous `start` function here
 
 #[start]
-fn f(argc: isize, argv: *const *const u8) -> isize {} //~ ERROR E0138
+fn f(argc: isize, argv: *const *const u8) -> isize {}
+//~^ ERROR E0138
+//~| NOTE multiple `start` functions