diff --git a/firmware/Makefile b/firmware/Makefile
index c0705ec..8c1b881 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -118,8 +118,6 @@ include $(CHIBIOS)/os/hal/osal/rt-nil/osal.mk
 # RTOS files (optional).
 include $(CHIBIOS)/os/rt/rt.mk
 include $(CHIBIOS)/os/common/ports/ARMv6-M/compilers/GCC/mk/port.mk
-# Auto-build files in ./source recursively.
-include $(CHIBIOS)/tools/mk/autobuild.mk
 # Other files (optional).
 include $(CHIBIOS)/os/hal/lib/streams/streams.mk