diff --git a/makefile b/makefile
index 5743637..3479d98 100644
--- a/makefile
+++ b/makefile
@@ -17,10 +17,10 @@ LDFLAGS := $(shell pkg-config --libs sdl2) -lm
 DEBUG ?= 0
 
 ifeq ($(DEBUG),1)
-CFLAGS += -DDEBUG -fsanitize=address,undefined -g -Og
+CFLAGS += -fsanitize=address,undefined -g -Og
 PROF := dbg
 else
-REL_FLAGS += -O2
+CFLAGS += -DNDEBUG -O2
 PROF := rel
 endif