diff --git a/chad.mk b/chad.mk
index b300ac9..fc51c38 100644
--- a/chad.mk
+++ b/chad.mk
@@ -5,7 +5,7 @@ ARGS:=${TARGET} < source/main.c
 GCC:=gcc
 D.versions:=-D_XOPEN_SOURCE=700
 GCC.warnings:=-Wall -Wextra -Wpedantic -Wvla -Wshadow -Wundef
-GCC.debug:=-Og -ggdb -pg -fno-inline
+GCC.debug:=-O0 -ggdb -pg -fno-inline
 
 CLANG:=clang
 CLANG.warnings:=-Weverything
@@ -14,6 +14,6 @@ VALGRIND:=valgrind
 VALGRIND.flags:=--track-origins=yes --leak-check=full --show-leak-kinds=all
 
 chad_test:
-	${CLANG} ${CPPFLAGS} ${D.versions}              ${GCC.warnings} ${SRC} -o ${TARGET}
+	${CLANG} ${CPPFLAGS} ${D.versions}              ${CLANG.warnings} ${SRC} -o ${TARGET}
 	${GCC}   ${CPPFLAGS} ${D.versions} ${GCC.debug} ${GCC.warnings} ${SRC} -o ${TARGET}
 	${VALGRIND} ${VALGRIND.flags} $(shell pwd)/${TARGET} ${ARGS}