diff --git a/fxsdk/cmake/FXCG50.cmake b/fxsdk/cmake/FXCG50.cmake
index 9e15765..15eff05 100644
--- a/fxsdk/cmake/FXCG50.cmake
+++ b/fxsdk/cmake/FXCG50.cmake
@@ -21,6 +21,10 @@ add_link_options(-nostdlib -Wl,--no-warn-rwx-segments)
 link_libraries(-lgcc)
 add_compile_definitions(TARGET_FXCG50)
 
+if(CMAKE_BUILD_TYPE STREQUAL FastLoad)
+  add_compile_definitions(TARGET_FXCG50_FASTLOAD)
+endif()
+
 set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
 set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
 set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)