diff --git a/04-addr-methods/Makefile b/04-addr-methods/Makefile
index b219938..a917726 100644
--- a/04-addr-methods/Makefile
+++ b/04-addr-methods/Makefile
@@ -1,14 +1,14 @@
 ASM = nasm
 CXX = gcc
-CXX_FLAGS = -Os -static
+CXX_FLAGS = -Og -static
 ASM_FLAGS = -felf64 -g
 LINK = ld
 
 task3: task3_c.o task3.o
-	$(CXX) -Os $^ -o $@
+	$(CXX) -Og $^ -o $@ -g
 
 task3_c.o: task3.c
-	$(CXX) -Os -c $^ -o $@
+	$(CXX) -Og -c $^ -o $@ -g
 
 task2: task2.o
 	$(CXX) $(CXX_FLAGS) $^ -o $@