diff --git a/Makefile b/Makefile
index 6cab0043a..18d4df61b 100644
--- a/Makefile
+++ b/Makefile
@@ -204,10 +204,11 @@ ifeq ($(TESTMODE),ON)
 	CXXFLAGS += -fno-omit-frame-pointer -g
 
 	CXXFLAGS += -D_GLIBCXX_ASSERTIONS
-	# CXXFLAGS += -D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_BACKTRACE
+	# CXXFLAGS += -D_GLIBCXX_DEBUG
+	CXXFLAGS += -D_GLIBCXX_DEBUG_BACKTRACE
 
-	# CXXFLAGS += -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE
 	CXXFLAGS += -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_DEBUG
+	# CXXFLAGS += -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE
 
 	CXXFLAGS += -fsanitize=undefined,address