diff --git a/Makefile b/Makefile
index 4b27493..e43b162 100644
--- a/Makefile
+++ b/Makefile
@@ -110,7 +110,7 @@ VFP_SELECT=
 #
 # NOTE: Includes and defines should use the INCLUDES and DEFINES variable
 # above.
-CFLAGS =-O0
+CFLAGS=
 
 # Additional / custom C++ compiler flags.
 #