diff --git a/c++/carla-backend/carla_backend.doxygen b/c++/carla-backend/carla_backend.doxygen
index 0a21bbd..b462d29 100644
--- a/c++/carla-backend/carla_backend.doxygen
+++ b/c++/carla-backend/carla_backend.doxygen
@@ -241,7 +241,7 @@ EXPAND_ONLY_PREDEF     = NO
 SEARCH_INCLUDES        = YES
 INCLUDE_PATH           =
 INCLUDE_FILE_PATTERNS  =
-PREDEFINED             = CARLA_ENGINE_JACK CARLA_ENGINE_RTAUDIO WANT_FLUIDSYNTH WANT_LINUXSAMPLER
+PREDEFINED             = CARLA_ENGINE_JACK CARLA_ENGINE_RTAUDIO WANT_LADSPA WANT_DSSI WANT_LV2 WANT_VST WANT_FLUIDSYNTH WANT_LINUXSAMPLER
 EXPAND_AS_DEFINED      =
 SKIP_FUNCTION_MACROS   = YES
 #---------------------------------------------------------------------------