diff --git a/src/lib/parse/regex.js b/src/lib/parse/regex.js
index 4b86f34c7d..08457ab368 100644
--- a/src/lib/parse/regex.js
+++ b/src/lib/parse/regex.js
@@ -49,6 +49,11 @@ function unescapeFormat(s) {
     }));
 }
 
+const reRegExpChar = /[\\^$.*+?()[\]{}|]/g;
+const reHasRegExpChar = RegExp(reRegExpChar.source);
+
 export function regexEscape(s) {
-    return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
+    return (string && reHasRegExpChar.test(string))
+    ? string.replace(reRegExpChar, '\\$&')
+    : string
 }