diff --git a/src/lib/isDate.js b/src/lib/isDate.js
index ede3e33e6..3a1e4afd2 100644
--- a/src/lib/isDate.js
+++ b/src/lib/isDate.js
@@ -28,6 +28,7 @@ export default function isDate(input, options) {
     options = merge(options, default_date_options);
   }
   if (typeof input === 'string' && isValidFormat(options.format)) {
+    if (options.strictMode && input.length !== options.format.length) return false;
     const formatDelimiter = options.delimiters
       .find(delimiter => options.format.indexOf(delimiter) !== -1);
     const dateDelimiter = options.strictMode
diff --git a/test/validators.test.js b/test/validators.test.js
index 6b61c18b7..08d76f821 100644
--- a/test/validators.test.js
+++ b/test/validators.test.js
@@ -14001,6 +14001,7 @@ describe('Validators', () => {
         new Date([2014, 2, 15]),
         new Date('2014-03-15'),
         '29.02.2020',
+        '02.29.2020.20',
         '2024-',
         '2024-05',
         '2024-05-',