diff --git a/src/librustc_passes/ast_validation.rs b/src/librustc_passes/ast_validation.rs
index dd460b36d9f95..abbd399a944a0 100644
--- a/src/librustc_passes/ast_validation.rs
+++ b/src/librustc_passes/ast_validation.rs
@@ -175,7 +175,8 @@ impl<'a> Visitor<'a> for AstValidator<'a> {
             ExprKind::ObsoleteInPlace(..) => {
                 self.err_handler()
                     .struct_span_err(expr.span, "emplacement syntax is obsolete (for now, anyway)")
-                    .note("for more information, see <https://github.com/rust-lang/rust/issues/27779#issuecomment-378416911>")
+                    .note("for more information, see \
+                           <https://github.com/rust-lang/rust/issues/27779#issuecomment-378416911>")
                     .emit();
             }
             _ => {}