diff --git a/Makefile b/Makefile
index d89978e..29a9c38 100644
--- a/Makefile
+++ b/Makefile
@@ -110,7 +110,7 @@ VFP_SELECT=hardfp
 #
 # NOTE: Includes and defines should use the INCLUDES and DEFINES variable
 # above.
-CFLAGS= -O0
+CFLAGS=
 
 # Additional / custom C++ compiler flags.
 #