diff --git a/include/gos/gos.h b/include/gos/gos.h
index 37335fbb..54529016 100644
--- a/include/gos/gos.h
+++ b/include/gos/gos.h
@@ -429,6 +429,8 @@
  */
 #elif GFX_USE_OS_CHIBIOS
 	#include "gos/chibios.h"
+#elif GFX_USE_OS_FREERTOS
+	#include "gos/freertos.h"
 #elif GFX_USE_OS_WIN32
 	#include "gos/win32.h"
 #elif GFX_USE_OS_LINUX
diff --git a/src/gos/gos.mk b/src/gos/gos.mk
index 9db29fe2..8ef22121 100644
--- a/src/gos/gos.mk
+++ b/src/gos/gos.mk
@@ -1,4 +1,5 @@
 GFXSRC +=   $(GFXLIB)/src/gos/chibios.c	\
+			$(GFXLIB)/src/gos/freertos.c \
 			$(GFXLIB)/src/gos/win32.c \
 			$(GFXLIB)/src/gos/linux.c \
 			$(GFXLIB)/src/gos/osx.c \