diff --git a/src/corelib/io/qurl.cpp b/src/corelib/io/qurl.cpp
index be4f177515..3c8483029a 100644
--- a/src/corelib/io/qurl.cpp
+++ b/src/corelib/io/qurl.cpp
@@ -1105,6 +1105,10 @@ static const QChar *parseIpFuture(QString &host, const QChar *begin, const QChar
         // decode the whole string, skipping the "[vH." and "]" which we already know to be there
         host += QString::fromRawData(begin, 4);
 
+        // uppercase the version, if necessary
+        if (begin[2].unicode() >= 'a')
+            host[host.length() - 2] = begin[2].unicode() - 0x20;
+
         begin += 4;
         --end;
 
diff --git a/tests/auto/corelib/io/qurl/tst_qurl.cpp b/tests/auto/corelib/io/qurl/tst_qurl.cpp
index ad4c0c1224..105485ca5f 100644
--- a/tests/auto/corelib/io/qurl/tst_qurl.cpp
+++ b/tests/auto/corelib/io/qurl/tst_qurl.cpp
@@ -1636,7 +1636,7 @@ void tst_QUrl::ipvfuture_data()
     QTest::newRow("non-hex-version") << "x://[vz.1234]" << false;
 
     QTest::newRow("digit-ver") << "x://[v7.1]" << true << "x://[v7.1]";
-    QTest::newRow("lowercase-hex-ver") << "x://[va.1]" << true << "x://[va.1]";
+    QTest::newRow("lowercase-hex-ver") << "x://[va.1]" << true << "x://[vA.1]";
     QTest::newRow("lowercase-hex-ver") << "x://[vA.1]" << true << "x://[vA.1]";
 
     QTest::newRow("data-digits") << "x://[v7.1234]" << true << "x://[v7.1234]";