diff --git a/libuavcan_drivers/stm32/test_stm32f107/Makefile b/libuavcan_drivers/stm32/test_stm32f107/Makefile
index 6c1ffbde04..47b30b0291 100644
--- a/libuavcan_drivers/stm32/test_stm32f107/Makefile
+++ b/libuavcan_drivers/stm32/test_stm32f107/Makefile
@@ -41,4 +41,8 @@ UINCDIR += src/sys
 
 SERIAL_CLI_PORT_NUMBER = 2
 
+RELEASE_OPT = -Os -fomit-frame-pointer
+DEBUG_OPT = -Os -g3
+USE_OPT = -flto -u_port_lock -u_port_unlock -uchThdExit
+
 include crdr_chibios/rules_stm32f105_107.mk