diff --git a/extras/buildsystem/cmake/include/config.cmake b/extras/buildsystem/cmake/include/config.cmake
index ee222b4bf9e6c87fa99176ce265d644226b84fbf..fc9ad529577fbf40e4c3240b7345cff9cf54f9c7 100644
--- a/extras/buildsystem/cmake/include/config.cmake
+++ b/extras/buildsystem/cmake/include/config.cmake
@@ -114,7 +114,7 @@ if(APPLE)
             "${CMAKE_SHARED_MODULE_CREATE_C_FLAGS} -undefined dynamic_lookup")
 
     set(SYS_DARWIN 1)
-
+    add_definitions(-std=gnu99) # Hack for obj-c files to be compiled with gnu99
     vlc_enable_modules(macosx minimal_macosx access_eyetv quartztext)
 
     vlc_find_frameworks(Cocoa Carbon OpenGL AGL IOKit Quicktime