diff --git a/demos/ATSAMA5D2/RT-SAMA5D2-XPLAINED/Makefile b/demos/ATSAMA5D2/RT-SAMA5D2-XPLAINED/Makefile
index 8d6601400..b2b020c35 100755
--- a/demos/ATSAMA5D2/RT-SAMA5D2-XPLAINED/Makefile
+++ b/demos/ATSAMA5D2/RT-SAMA5D2-XPLAINED/Makefile
@@ -5,7 +5,7 @@
 
 # Compiler options here.
 ifeq ($(USE_OPT),)
-  USE_OPT = -O2 -ggdb -fomit-frame-pointer -falign-functions=16
+  USE_OPT = -Og -ggdb -fomit-frame-pointer -falign-functions=16
 endif
 
 # C specific options here (added to USE_OPT).