diff --git a/tests/auto/corelib/io/qurl/tst_qurl.cpp b/tests/auto/corelib/io/qurl/tst_qurl.cpp
index dae137cf10..7872ac1d88 100644
--- a/tests/auto/corelib/io/qurl/tst_qurl.cpp
+++ b/tests/auto/corelib/io/qurl/tst_qurl.cpp
@@ -2145,14 +2145,15 @@ void tst_QUrl::isValid()
     }
 
     {
-        QUrl url = QUrl::fromEncoded("foo://%f0%9f%93%99.example.la/g");
+        // U+1F100 DIGIT ZERO FULL STOP
+        QUrl url = QUrl::fromEncoded("foo://%f0%9f%84%80.example.la/g");
         QVERIFY(!url.isValid());
         QVERIFY(url.toString().isEmpty());
         QCOMPARE(url.path(), QString("/g"));
-        url.setHost("%f0%9f%93%99.example.la/");
+        url.setHost("%f0%9f%84%80.example.la/");
         QVERIFY(!url.isValid());
         QVERIFY(url.toString().isEmpty());
-        url.setHost("\xf0\x9f\x93\x99.example.la/");
+        url.setHost("\xf0\x9f\x84\x80.example.la/");
         QVERIFY(!url.isValid());
         QVERIFY(url.toString().isEmpty());
         QVERIFY2(url.errorString().contains("Invalid hostname"),