diff --git a/Makefile b/Makefile
index 80a57a0..900e119 100644
--- a/Makefile
+++ b/Makefile
@@ -26,6 +26,8 @@ LINUX_GL_LIBS = -lGL
 CXXFLAGS += -fsanitize=undefined,thread -std=c++20 -I$(IMGUI_DIR) -I$(IMGUI_DIR)/misc/cpp -I$(IMGUI_DIR)/backends -D'IMGUI_USER_CONFIG="../myimconfig.h"'
 # https://t.me/NightShadowsHangout/670691
 CXXFLAGS += -g -Werror -Wall -Wextra -Wshadow -Wpedantic -Wno-gnu-anonymous-struct -fno-rtti -fPIC -Wconversion -Wno-unused-parameter -Wimplicit-fallthrough
+# https://sourceforge.net/p/valgrind/mailman/valgrind-users/thread/Ygze8PzaQAYWlKDj%40wildebeest.org/
+CXXFLAGS += -gdwarf-4
 LIBS =
 
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