diff --git a/modules/CMakeLists.txt b/modules/CMakeLists.txt
index 8f02caa..074f6ed 100644
--- a/modules/CMakeLists.txt
+++ b/modules/CMakeLists.txt
@@ -18,6 +18,7 @@ MACRO(ADD_MODULE name file )
     list(APPEND plaYUver_Mod_SRCS ${file} )
     LIST(APPEND MODULES_LIST ${name} )
     file(APPEND ${CMAKE_CURRENT_BINARY_DIR}/ModulesListHeader.h   "#include \"${file}.h\"\n")
+    add_definitions( -DUSE_MODULE_${name} )
     file(APPEND ${CMAKE_CURRENT_BINARY_DIR}/ModulesListMacro.h "\\\n  REGISTER_MODULE( ${name} ); ")
   endif()
   unset(__modulename)