diff --git a/testhal/STM32/STM32F4xx/USB_HOST/Makefile b/testhal/STM32/STM32F4xx/USB_HOST/Makefile
index 2f9ba4f5..5950691a 100644
--- a/testhal/STM32/STM32F4xx/USB_HOST/Makefile
+++ b/testhal/STM32/STM32F4xx/USB_HOST/Makefile
@@ -30,7 +30,7 @@ endif
 
 # Enable this if you want link time optimizations (LTO)
 ifeq ($(USE_LTO),)
-  USE_LTO = yes
+  USE_LTO = no
 endif
 
 # If enabled, this option allows to compile the application in THUMB mode.