diff --git a/src/lib/isByteLength.js b/src/lib/isByteLength.js
index 619d7f604..99f0d25ad 100644
--- a/src/lib/isByteLength.js
+++ b/src/lib/isByteLength.js
@@ -9,7 +9,7 @@ export default function isByteLength(str, options) {
     min = options.min || 0;
     max = options.max;
   } else { // backwards compatibility: isByteLength(str, min [, max])
-    min = arguments[1];
+    min = arguments[1] || 0;
     max = arguments[2];
   }
   const len = encodeURI(str).split(/%..|./).length - 1;
diff --git a/test/validators.test.js b/test/validators.test.js
index 9c867efae..610e76605 100644
--- a/test/validators.test.js
+++ b/test/validators.test.js
@@ -5727,6 +5727,12 @@ describe('Validators', () => {
       valid: [''],
       invalid: ['ｇ', 'a'],
     });
+    test({
+      validator: 'isByteLength',
+      args: [undefined, 3],
+      valid: ['abc', 'de', 'ｇ', 'a', ''],
+      invalid: ['abcd', 'ｇｍ'],
+    });
   });