diff --git a/autotests/kxmlgui_unittest.h b/autotests/kxmlgui_unittest.h
--- a/autotests/kxmlgui_unittest.h
+++ b/autotests/kxmlgui_unittest.h
@@ -49,6 +49,7 @@
     void testShortcuts();
     void testPopupMenuParent();
     void testSpecificApplicationLanguageQLocale();
+    void testSingleModifierQKeySequenceEndsWithPlus();
 };
 
 #endif
diff --git a/autotests/kxmlgui_unittest.cpp b/autotests/kxmlgui_unittest.cpp
--- a/autotests/kxmlgui_unittest.cpp
+++ b/autotests/kxmlgui_unittest.cpp
@@ -1097,3 +1097,14 @@
 
     QCOMPARE(QLocale::system(), originalSystemLocale);
 }
+
+void KXmlGui_UnitTest::testSingleModifierQKeySequenceEndsWithPlus()
+{
+    // Check that native texts of the Meta, Alt, Control, Shift, Keypad modifiers end in "+"
+    // we depend on that in KKeySequenceWidgetPrivate::updateShortcutDisplay()
+    QVERIFY(QKeySequence(Qt::MetaModifier).toString(QKeySequence::NativeText).endsWith(QLatin1Char('+')));
+    QVERIFY(QKeySequence(Qt::AltModifier).toString(QKeySequence::NativeText).endsWith(QLatin1Char('+')));
+    QVERIFY(QKeySequence(Qt::ControlModifier).toString(QKeySequence::NativeText).endsWith(QLatin1Char('+')));
+    QVERIFY(QKeySequence(Qt::ShiftModifier).toString(QKeySequence::NativeText).endsWith(QLatin1Char('+')));
+    QVERIFY(QKeySequence(Qt::KeypadModifier).toString(QKeySequence::NativeText).endsWith(QLatin1Char('+')));
+}
diff --git a/src/kkeysequencewidget.cpp b/src/kkeysequencewidget.cpp
--- a/src/kkeysequencewidget.cpp
+++ b/src/kkeysequencewidget.cpp
@@ -640,28 +640,28 @@
                 s.append(QLatin1Char(','));
             }
             if (modifierKeys & Qt::MetaModifier) {
-                s += KKeyServer::modToStringUser(Qt::MetaModifier) + QLatin1Char('+');
+                s += QKeySequence(Qt::MetaModifier).toString(QKeySequence::NativeText);
             }
 #if defined(Q_OS_MAC)
             if (modifierKeys & Qt::AltModifier) {
-                s += KKeyServer::modToStringUser(Qt::AltModifier) + QLatin1Char('+');
+                s += QKeySequence(Qt::AltModifier).toString(QKeySequence::NativeText);
             }
             if (modifierKeys & Qt::ControlModifier) {
-                s += KKeyServer::modToStringUser(Qt::ControlModifier) + QLatin1Char('+');
+                s += QKeySequence(Qt::ControlModifier).toString(QKeySequence::NativeText);
             }
 #else
             if (modifierKeys & Qt::ControlModifier) {
-                s += KKeyServer::modToStringUser(Qt::ControlModifier) + QLatin1Char('+');
+                s += QKeySequence(Qt::ControlModifier).toString(QKeySequence::NativeText);
             }
             if (modifierKeys & Qt::AltModifier) {
-                s += KKeyServer::modToStringUser(Qt::AltModifier) + QLatin1Char('+');
+                s += QKeySequence(Qt::AltModifier).toString(QKeySequence::NativeText);
             }
 #endif
             if (modifierKeys & Qt::ShiftModifier) {
-                s += KKeyServer::modToStringUser(Qt::ShiftModifier) + QLatin1Char('+');
+                s += QKeySequence(Qt::ShiftModifier).toString(QKeySequence::NativeText);
             }
             if (modifierKeys & Qt::KeypadModifier) {
-                s += KKeyServer::modToStringUser(Qt::KeypadModifier) + QLatin1Char('+');
+                s += QKeySequence(Qt::KeypadModifier).toString(QKeySequence::NativeText);
             }
 
         } else if (nKey == 0) {