diff --git a/tests/auto/gui/kernel/qkeysequence/tst_qkeysequence.cpp b/tests/auto/gui/kernel/qkeysequence/tst_qkeysequence.cpp
index 6b74cca53f6..8258f3c2e64 100644
--- a/tests/auto/gui/kernel/qkeysequence/tst_qkeysequence.cpp
+++ b/tests/auto/gui/kernel/qkeysequence/tst_qkeysequence.cpp
@@ -64,6 +64,10 @@ static QChar macSymbolForQtKey(int key)
 
 #endif
 
+QT_BEGIN_NAMESPACE
+extern void qt_set_sequence_auto_mnemonic(bool);
+QT_END_NAMESPACE
+
 class tst_QKeySequence : public QObject
 {
     Q_OBJECT
@@ -367,9 +371,6 @@ void tst_QKeySequence::keyBindings()
 
 void tst_QKeySequence::mnemonic_data()
 {
-#ifdef Q_OS_MAC
-    QSKIP("Test not applicable to OS X");
-#endif
     QTest::addColumn<QString>("string");
     QTest::addColumn<QString>("key");
     QTest::addColumn<bool>("warning");
@@ -389,11 +390,21 @@ void tst_QKeySequence::mnemonic_data()
 
 void tst_QKeySequence::mnemonic()
 {
+    const auto resetAutoMnemonic = qScopeGuard([] {
 #ifndef Q_OS_MAC
+        qt_set_sequence_auto_mnemonic(true);
+#else
+        qt_set_sequence_auto_mnemonic(false);
+#endif
+    });
+
     QFETCH(QString, string);
     QFETCH(QString, key);
     QFETCH(bool, warning);
 
+    qt_set_sequence_auto_mnemonic(false);
+    QCOMPARE(QKeySequence::mnemonic(string), QKeySequence());
+
 #ifdef QT_NO_DEBUG
     Q_UNUSED(warning);
 #else
@@ -403,11 +414,9 @@ void tst_QKeySequence::mnemonic()
     //    qWarning(qPrintable(str));
     }
 #endif
-    QKeySequence seq = QKeySequence::mnemonic(string);
-    QKeySequence res = QKeySequence(key);
 
-    QCOMPARE(seq, res);
-#endif
+    qt_set_sequence_auto_mnemonic(true);
+    QCOMPARE(QKeySequence::mnemonic(string), QKeySequence(key));
 }
 
 void tst_QKeySequence::toString_data()