diff --git a/lib/internal/util/comparisons.js b/lib/internal/util/comparisons.js
index b58b828a96..3b800b48b7 100644
--- a/lib/internal/util/comparisons.js
+++ b/lib/internal/util/comparisons.js
@@ -304,9 +304,9 @@ function objectComparisonStart(val1, val2, mode, memos) {
     }
     const time1 = DatePrototypeGetTime(val1);
     const time2 = DatePrototypeGetTime(val2);
-    if (time1 !== time2) {
-      // eslint-disable-next-line no-self-compare
-      return time1 !== time1 && time2 !== time2;
+    // eslint-disable-next-line no-self-compare
+    if (time1 !== time2 && (time1 === time1 || time2 === time2)) {
+      return false;
     }
   } else if (isRegExp(val1)) {
     if (!isRegExp(val2) || !areSimilarRegExps(val1, val2)) {
diff --git a/test/parallel/test-assert-deep.js b/test/parallel/test-assert-deep.js
index 73da19017a..9c1d8eefe0 100644
--- a/test/parallel/test-assert-deep.js
+++ b/test/parallel/test-assert-deep.js
@@ -752,7 +752,18 @@ test('Additional tests', () => {
 
   assertNotDeepOrStrict(new Date(), new Date(2000, 3, 14));
 
-  assertDeepAndStrictEqual(new Date('foo'), new Date('bar'));
+  {
+    // Invalid dates deep comparison.
+    const date1 = new Date('foo');
+    const date2 = new Date('bar');
+    date1.foo = true;
+    date2.foo = true;
+    assertDeepAndStrictEqual(date1, date2);
+
+    date1.bar = false;
+    date2.bar = true;
+    assertNotDeepOrStrict(date1, date2);
+  }
 
   assertDeepAndStrictEqual(/a/, /a/);
   assertDeepAndStrictEqual(/a/g, /a/g);