diff --git a/libuavcan_drivers/stm32/test_stm32f107/Makefile b/libuavcan_drivers/stm32/test_stm32f107/Makefile
index 908e207c81..ff390ac45f 100644
--- a/libuavcan_drivers/stm32/test_stm32f107/Makefile
+++ b/libuavcan_drivers/stm32/test_stm32f107/Makefile
@@ -43,6 +43,6 @@ SERIAL_CLI_PORT_NUMBER = 2
 
 RELEASE_OPT = -Os -fomit-frame-pointer
 DEBUG_OPT = -Os -g3
-USE_OPT = -flto
+#USE_OPT = -flto
 
 include crdr_chibios/rules_stm32f105_107.mk