diff --git a/Makefile b/Makefile
index 5068b25..66aef6e 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,8 @@ LIBDIR := ext/tangerine
 LIB := $(LIBDIR)/build/libTangerine.a
 
 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 -O -Wall -Wuninitialized -pedantic \
 			-I$(LIBDIR)/include/ \
 			$(shell sdl2-config --cflags)
 LDFLAGS := $(shell sdl2-config --libs) -lGLEW -lGL