diff --git a/Modules/Platform/Darwin.cmake b/Modules/Platform/Darwin.cmake
index 6e67f2093f..81f33e1a21 100644
--- a/Modules/Platform/Darwin.cmake
+++ b/Modules/Platform/Darwin.cmake
@@ -74,7 +74,7 @@ ENDIF(NOT _CMAKE_OSX_SDKS)
 
 # Set CMAKE_OSX_DEPLOYMENT_TARGET_DEFAULT to the current version of OS X
 EXECUTE_PROCESS(COMMAND sw_vers -productVersion OUTPUT_VARIABLE CURRENT_OSX_VERSION)
-STRING(REGEX REPLACE "^.*(10)\\.([0-9]+)\\.([0-9]+).*$" "\\1.\\2"
+STRING(REGEX REPLACE "^.*(10)\\.([0-9]+)\\.*([0-9]+)*.*$" "\\1.\\2"
   CMAKE_OSX_DEPLOYMENT_TARGET_DEFAULT ${CURRENT_OSX_VERSION})
 
 # Set CMAKE_OSX_SYSROOT_DEFAULT based on CMAKE_OSX_DEPLOYMENT_TARGET_DEFAULT.