diff --git a/Makefile b/Makefile
index e727670e..6d86c2d4 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ ifeq ($(RELEASE), 1)
 	LDFLAGS = -s
 	FILENAME_DEF = CSE2
 else
-	CXXFLAGS = -O0 -g
+	CXXFLAGS = -Og -g3
 	FILENAME_DEF = CSE2d
 endif