diff --git a/apps/maze/Makefile b/apps/maze/Makefile
index d01b418..edb8bdf 100644
--- a/apps/maze/Makefile
+++ b/apps/maze/Makefile
@@ -1,6 +1,7 @@
 TOPDIR=../../
 PROJECT:=$(shell basename ${PWD})
 SRCS=${PROJECT}.c ${TOPDIR}/apps/crt0.S
+OPT=-O0
 all: all_common
 test: test_common
 clean: clean_common