diff --git a/Makefile b/Makefile
index 79782d5..ddde8fb 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,8 @@
 
 SHELL = /bin/sh
 CXX = g++
-CXXFLAGS = -std=c++11 -g -ggdb3 -Wall \
+# NOTE: have to set -O or -O1 here to get warnings for uninitialized variables
+CXXFLAGS = -std=c++11 -g -ggdb3 -Wall -O -Wall -Wuninitialized \
 	-Iinclude \
 	-I/usr/include/SDL2 \
 	-Iext/stb_libs \