diff --git a/code/CMakeLists.txt b/code/CMakeLists.txt
index e71a1859d..1ae01610f 100644
--- a/code/CMakeLists.txt
+++ b/code/CMakeLists.txt
@@ -41,6 +41,11 @@ INCLUDE(${CMAKE_ROOT}/Modules/Documentation.cmake OPTIONAL)
 # Force out of source builds.
 CHECK_OUT_OF_SOURCE()
 
+# Specify Mac OS X deployment target before including Darwin.cmake
+IF(NOT CMAKE_OSX_DEPLOYMENT_TARGET)
+  SET(CMAKE_OSX_DEPLOYMENT_TARGET "10.6")
+ENDIF(NOT CMAKE_OSX_DEPLOYMENT_TARGET)
+
 CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
 PROJECT(RyzomCore CXX C)
 SET(NL_VERSION_MAJOR 0)