diff --git a/src/librustc_mir/util/graphviz.rs b/src/librustc_mir/util/graphviz.rs
index 04b0e16cd9a..188da9a82dc 100644
--- a/src/librustc_mir/util/graphviz.rs
+++ b/src/librustc_mir/util/graphviz.rs
@@ -167,7 +167,7 @@ fn write_graph_label<'a, 'gcx, 'tcx, W: Write>(tcx: TyCtxt<'a, 'gcx, 'tcx>,
             write!(w, r#"{:?}: {}; // {}<br align="left"/>"#,
                    Place::Base(PlaceBase::Local(local)), escape(&decl.ty), name)?;
         } else {
-            write!(w, r#"let mut {:?}: {};<br align="left"/>"#,
+            write!(w, r#"{:?}: {};<br align="left"/>"#,
                    Place::Base(PlaceBase::Local(local)), escape(&decl.ty))?;
         }
     }