diff --git a/lib/repl.js b/lib/repl.js
index ecf81a9ac3c..3bc08274404 100644
--- a/lib/repl.js
+++ b/lib/repl.js
@@ -1337,8 +1337,8 @@ function _memory(cmd) {
   if (cmd) {
     // Going down is { and (   e.g. function() {
     // going up is } and )
-    var dw = cmd.match(/{|\(/g);
-    var up = cmd.match(/}|\)/g);
+    let dw = cmd.match(/[{(]/g);
+    let up = cmd.match(/[})]/g);
     up = up ? up.length : 0;
     dw = dw ? dw.length : 0;
     var depth = dw - up;