diff --git a/src/osx/carbon/dcscreen.cpp b/src/osx/carbon/dcscreen.cpp
index 81761d364d..e738a13e58 100644
--- a/src/osx/carbon/dcscreen.cpp
+++ b/src/osx/carbon/dcscreen.cpp
@@ -91,7 +91,7 @@ wxBitmap wxScreenDCImpl::DoGetAsBitmap(const wxRect *subrect) const
     CGImageRef image = NULL;
     
 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
-    if ( UMAGetSystemVersion() >= 10.6)
+    if ( UMAGetSystemVersion() >= 0x1060)
     {
         image = CGDisplayCreateImage(kCGDirectMainDisplay);
     }