diff --git a/src/corelib/global/qglobal.cpp b/src/corelib/global/qglobal.cpp
index 66664f0f2a..d7c166721e 100644
--- a/src/corelib/global/qglobal.cpp
+++ b/src/corelib/global/qglobal.cpp
@@ -1770,8 +1770,9 @@ QSysInfo::MacVersion QSysInfo::macVersion()
 {
 #if defined(Q_OS_OSX)
     SInt32 gestalt_version;
-    if (Gestalt(gestaltSystemVersion, &gestalt_version) == noErr) {
-        return QSysInfo::MacVersion(((gestalt_version & 0x00F0) >> 4) + 2);
+    if (Gestalt(gestaltSystemVersionMinor, &gestalt_version) == noErr) {
+        // add 2 because OS X 10.0 is 0x02 in the enum
+        return QSysInfo::MacVersion(gestalt_version + 2);
     }
 #elif defined(Q_OS_IOS)
     return qt_ios_version(); // qtcore_mac_objc.mm