diff --git a/src/Makefile.am b/src/Makefile.am
index ea0af3a36..19f90444b 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,3 +1,6 @@
+PROJECTM_SDL_SUBDIR=
+PROJECTM_QT_SUBDIR=
+
 if ENABLE_SDL
   PROJECTM_SDL_SUBDIR = projectM-sdl
 endif