1 files changed, 6 insertions, 2 deletions
diff --git a/src/libsyntax_ext/format.rs b/src/libsyntax_ext/format.rs
index 29280d203c7..a7822414c69 100644
--- a/src/libsyntax_ext/format.rs
+++ b/src/libsyntax_ext/format.rs
@@ -814,8 +814,12 @@ pub fn expand_preparsed_format_args(ecx: &mut ExtCtxt,
                 let (sp, msg) = errs.into_iter().next().unwrap();
                 cx.ecx.struct_span_err(sp, msg)
             } else {
-                cx.ecx.struct_span_err(errs.iter().map(|&(sp, _)| sp).collect::<Vec<Span>>(),
-                                       "multiple unused formatting arguments")
+                let mut diag = cx.ecx.struct_span_err(
+                    errs.iter().map(|&(sp, _)| sp).collect::<Vec<Span>>(),
+                    "multiple unused formatting arguments"
+                );
+                diag.span_label(cx.fmtsp, "multiple unused arguments in this statement");
+                diag
             }
         };