diff --git a/qtools/qglobal.h b/qtools/qglobal.h
index aa11f01456f..c3f75946635 100644
--- a/qtools/qglobal.h
+++ b/qtools/qglobal.h
@@ -76,34 +76,6 @@
 #    undef MAC_OS_X_VERSION_MIN_REQUIRED
 #  endif
 #  define MAC_OS_X_VERSION_MIN_REQUIRED MAC_OS_X_VERSION_10_3
-#  include <AvailabilityMacros.h>
-#  if !defined(MAC_OS_X_VERSION_10_3)
-#     define MAC_OS_X_VERSION_10_3 MAC_OS_X_VERSION_10_2 + 10
-#  endif
-#  if !defined(MAC_OS_X_VERSION_10_4)
-#       define MAC_OS_X_VERSION_10_4 MAC_OS_X_VERSION_10_3 + 10
-#  endif
-#  if !defined(MAC_OS_X_VERSION_10_5)
-#       define MAC_OS_X_VERSION_10_5 MAC_OS_X_VERSION_10_4 + 10
-#  endif
-#  if !defined(MAC_OS_X_VERSION_10_6)
-#       define MAC_OS_X_VERSION_10_6 MAC_OS_X_VERSION_10_5 + 10
-#  endif
-#  if !defined(MAC_OS_X_VERSION_10_7)
-#       define MAC_OS_X_VERSION_10_7 MAC_OS_X_VERSION_10_6 + 10
-#  endif
-#  if !defined(MAC_OS_X_VERSION_10_8)
-#       define MAC_OS_X_VERSION_10_8 MAC_OS_X_VERSION_10_7 + 10
-#  endif
-#  if !defined(MAC_OS_X_VERSION_10_9)
-#       define MAC_OS_X_VERSION_10_9 MAC_OS_X_VERSION_10_8 + 10
-#  endif
-#  if !defined(MAC_OS_X_VERSION_10_10)
-#       define MAC_OS_X_VERSION_10_10 MAC_OS_X_VERSION_10_9 + 10
-#  endif
-#  if (MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_10)
-#    warning "This version of Mac OS X is unsupported"
-#  endif
 #elif defined(MSDOS) || defined(_MSDOS) || defined(__MSDOS__)
 #define _OS_MSDOS_
 #elif defined(OS2) || defined(_OS2) || defined(__OS2__)