diff --git a/src/lib/isFQDN.js b/src/lib/isFQDN.js
index eb6928fda..39b0b63dc 100644
--- a/src/lib/isFQDN.js
+++ b/src/lib/isFQDN.js
@@ -43,8 +43,8 @@ export default function isFQDN(str, options) {
     }
   }
 
-  // reject numeric TLDs
-  if (!options.allow_numeric_tld && /^\d+$/.test(tld)) {
+  // reject numeric TLDs (only when a TLD is actually required)
+  if (options.require_tld && !options.allow_numeric_tld && /^\d+$/.test(tld)) {
     return false;
   }
 
diff --git a/test/validators/isFQDN.test.js b/test/validators/isFQDN.test.js
index 134bab005..819081a6f 100644
--- a/test/validators/isFQDN.test.js
+++ b/test/validators/isFQDN.test.js
@@ -22,5 +22,18 @@ describe('isFQDN', () => {
       invalid: [
       ],
     });
+    test({
+      validator: 'isFQDN',
+      args: [{ require_tld: false }],
+      valid: [
+        'google.com',
+        'localhost',
+        '192',
+        '10',
+      ],
+      invalid: [
+        '',
+      ],
+    });
   });
 });