diff --git a/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm b/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm
index 66baf16..89794ef 100644
--- a/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm
+++ b/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm
@@ -830,7 +830,7 @@ void QCoreTextFontEngine::getUnscaledGlyph(glyph_t glyph, QPainterPath *path, gl
 
 QFixed QCoreTextFontEngine::emSquareSize() const
 {
-    return QFixed::QFixed(int(CTFontGetUnitsPerEm(ctfont)));
+    return QFixed(int(CTFontGetUnitsPerEm(ctfont)));
 }
 
 QFontEngine *QCoreTextFontEngine::cloneWithSize(qreal pixelSize) const
diff --git a/src/plugins/bearer/corewlan/qcorewlanengine.mm b/src/plugins/bearer/corewlan/qcorewlanengine.mm
index 341d3bc..3368234 100644
--- a/src/plugins/bearer/corewlan/qcorewlanengine.mm
+++ b/src/plugins/bearer/corewlan/qcorewlanengine.mm
@@ -287,7 +287,7 @@ void QScanThread::getUserConfigurations()
     QMacAutoReleasePool pool;
     userProfiles.clear();
 
-    NSArray<NSString *> *wifiInterfaces = [CWWiFiClient interfaceNames];
+    NSArray *wifiInterfaces = [CWWiFiClient interfaceNames];
     for (NSString *ifName in wifiInterfaces) {
 
         CWInterface *wifiInterface = [[CWWiFiClient sharedWiFiClient] interfaceWithName:ifName];
@@ -602,7 +602,7 @@ void QCoreWlanEngine::doRequestUpdate()
 
     QMacAutoReleasePool pool;
 
-    NSArray<NSString *> *wifiInterfaces = [CWWiFiClient interfaceNames];
+    NSArray *wifiInterfaces = [CWWiFiClient interfaceNames];
     for (NSString *ifName in wifiInterfaces) {
             scanThread->interfaceName = QString::fromNSString(ifName);
             scanThread->start();
diff --git a/src/plugins/platforms/cocoa/qcocoawindow.mm b/src/plugins/platforms/cocoa/qcocoawindow.mm
index 5cd4beb..84919e6 100644
--- a/src/plugins/platforms/cocoa/qcocoawindow.mm
+++ b/src/plugins/platforms/cocoa/qcocoawindow.mm
@@ -320,7 +320,7 @@ static void qt_closePopups()
 + (void)applicationActivationChanged:(NSNotification*)notification
 {
     const id sender = self;
-    NSEnumerator<NSWindow*> *windowEnumerator = nullptr;
+    NSEnumerator *windowEnumerator = nullptr;
     NSApplication *application = [NSApplication sharedApplication];
 
 #if QT_MACOS_PLATFORM_SDK_EQUAL_OR_ABOVE(__MAC_10_12)