diff --git a/lib/serializer.js b/lib/serializer.js
index 387e8927..f5830da8 100644
--- a/lib/serializer.js
+++ b/lib/serializer.js
@@ -128,10 +128,6 @@ module.exports = class Serializer {
     // eslint-disable-next-line
     for (var i = 0; i < len; i++) {
       point = str.charCodeAt(i)
-      if (point < 32 || (point >= 0xD800 && point <= 0xDFFF)) {
-        // The current character is non-printable characters or a surrogate.
-        return JSON.stringify(str)
-      }
       if (
         point === 0x22 || // '"'
         point === 0x5c // '\'
@@ -139,6 +135,9 @@ module.exports = class Serializer {
         last === -1 && (last = 0)
         result += str.slice(last, i) + '\\'
         last = i
+      } else if (point < 32 || (point >= 0xD800 && point <= 0xDFFF)) {
+        // The current character is non-printable characters or a surrogate.
+        return JSON.stringify(str)
       }
     }