diff --git a/Modules/Platform/Darwin.cmake b/Modules/Platform/Darwin.cmake
index 5a6068c17..a411bba64 100644
--- a/Modules/Platform/Darwin.cmake
+++ b/Modules/Platform/Darwin.cmake
@@ -1,6 +1,8 @@
 SET(CMAKE_SHARED_LIBRARY_PREFIX "lib") 
 SET(CMAKE_SHARED_LIBRARY_SUFFIX ".dylib") 
+SET(CMAKE_SHARED_MODULE_PREFIX "lib") 
 SET(CMAKE_SHARED_MODULE_SUFFIX ".so") 
+SET(CMAKE_MODULE_EXISTS 1)
 SET(CMAKE_DL_LIBS "")
 SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-dynamiclib")
 SET(CMAKE_SHARED_MODULE_CREATE_C_FLAGS "-bundle -flat_namespace -undefined suppress")