diff --git a/src/corelib/global/qglobal.cpp b/src/corelib/global/qglobal.cpp
index d359b27c0f..6880b9c1be 100644
--- a/src/corelib/global/qglobal.cpp
+++ b/src/corelib/global/qglobal.cpp
@@ -1016,6 +1016,7 @@ bool qSharedBuild()
     \value MV_LEOPARD  Apple codename for MV_10_5
     \value MV_SNOWLEOPARD  Apple codename for MV_10_6
     \value MV_LION     Apple codename for MV_10_7
+    \value MV_MOUNTAINLION Apple codename for MV_10_8
 
     \sa WinVersion
 */
diff --git a/src/corelib/global/qsysinfo.h b/src/corelib/global/qsysinfo.h
index 2c9ce39430..ae65c726b9 100644
--- a/src/corelib/global/qsysinfo.h
+++ b/src/corelib/global/qsysinfo.h
@@ -132,6 +132,7 @@ public:
         MV_10_5 = 0x0007,
         MV_10_6 = 0x0008,
         MV_10_7 = 0x0009,
+        MV_10_8 = 0x000A,
 
         /* codenames */
         MV_CHEETAH = MV_10_0,
@@ -141,7 +142,8 @@ public:
         MV_TIGER = MV_10_4,
         MV_LEOPARD = MV_10_5,
         MV_SNOWLEOPARD = MV_10_6,
-        MV_LION = MV_10_7
+        MV_LION = MV_10_7,
+        MV_MOUNTAINLION = MV_10_8
     };
     static const MacVersion MacintoshVersion;
     static MacVersion macVersion();