diff --git a/src/corelib/tools/qdatetime.cpp b/src/corelib/tools/qdatetime.cpp
index 4b6e739759..bf3cc68c06 100644
--- a/src/corelib/tools/qdatetime.cpp
+++ b/src/corelib/tools/qdatetime.cpp
@@ -1560,9 +1560,9 @@ QString QTime::toString(Qt::DateFormat format) const
     \row \li z \li the milliseconds without leading zeroes (0 to 999)
     \row \li zzz \li the milliseconds with leading zeroes (000 to 999)
     \row \li AP or A
-         \li use AM/PM display. \e AP will be replaced by either "AM" or "PM".
+         \li use AM/PM display. \e A/AP will be replaced by either "AM" or "PM".
     \row \li ap or a
-         \li use am/pm display. \e ap will be replaced by either "am" or "pm".
+         \li use am/pm display. \e a/ap will be replaced by either "am" or "pm".
     \row \li t \li the timezone (for example "CEST")
     \endtable
 
@@ -3759,8 +3759,7 @@ static bool hasUnquotedAP(const QString &f)
     for (int i=0; i<max; ++i) {
         if (f.at(i) == quote) {
             inquote = !inquote;
-        } else if (!inquote && f.at(i).toUpper() == QLatin1Char('A')
-            && i + 1 < max && f.at(i + 1).toUpper() == QLatin1Char('P')) {
+        } else if (!inquote && f.at(i).toUpper() == QLatin1Char('A')) {
             return true;
         }
     }
diff --git a/tests/auto/corelib/tools/qdatetime/tst_qdatetime.cpp b/tests/auto/corelib/tools/qdatetime/tst_qdatetime.cpp
index 05a6c6b252..b1874131d7 100644
--- a/tests/auto/corelib/tools/qdatetime/tst_qdatetime.cpp
+++ b/tests/auto/corelib/tools/qdatetime/tst_qdatetime.cpp
@@ -1437,16 +1437,10 @@ void tst_QDateTime::toString_strformat_data()
     QTest::newRow( "datetime13" ) << QDateTime(QDate(1974, 12, 1), QTime(14, 14, 20))
                                  << QString("hh''mm''ss dd''MM''yyyy")
                                  << QString("14'14'20 01'12'1974");
-    QTest::newRow( "missing p and P" ) << QDateTime(QDate(1999, 12, 31), QTime(3, 59, 59, 999))
-                                 << QString("hhhhhaA") << QString("03033aA");
-    QTest::newRow( "OK A, bad P" ) << QDateTime(QDate(1999, 12, 31), QTime(0, 59, 59, 999))
-        << QString("hhAX") << QString("00AX");
     QTest::newRow( "single, 0 => 12 AM" ) << QDateTime(QDate(1999, 12, 31), QTime(0, 59, 59, 999))
         << QString("hAP") << QString("12AM");
     QTest::newRow( "double, 0 => 12 AM" ) << QDateTime(QDate(1999, 12, 31), QTime(0, 59, 59, 999))
         << QString("hhAP") << QString("12AM");
-    QTest::newRow( "double, garbage" ) << QDateTime(QDate(1999, 12, 31), QTime(0, 59, 59, 999))
-        << QString("hhAX") << QString("00AX");
     QTest::newRow( "dddd" ) << QDateTime(QDate(1999, 12, 31), QTime(0, 59, 59, 999))
         << QString("dddd") << QString("Friday");
     QTest::newRow( "ddd" ) << QDateTime(QDate(1999, 12, 31), QTime(0, 59, 59, 999))