diff --git a/demos/ARM7-LPC214x-FATFS-GCC/Makefile b/demos/ARM7-LPC214x-FATFS-GCC/Makefile
index 17f023c4f..99ff790e9 100644
--- a/demos/ARM7-LPC214x-FATFS-GCC/Makefile
+++ b/demos/ARM7-LPC214x-FATFS-GCC/Makefile
@@ -5,7 +5,7 @@
 
 # Compiler options here.
 ifeq ($(USE_OPT),)
-  USE_OPT = -O0 -ggdb -fomit-frame-pointer -mabi=apcs-gnu -falign-functions=16
+  USE_OPT = -O2 -ggdb -fomit-frame-pointer -mabi=apcs-gnu -falign-functions=16
 endif
 
 # C++ specific options here (added to USE_OPT).