diff --git a/Makefile b/Makefile
index afbc00a..d4a36e5 100644
--- a/Makefile
+++ b/Makefile
@@ -7,14 +7,16 @@ CXXFLAGS = -Wall -O3
 # If SFML is not installed in a standard path, you need to tell the dynamic linker where to find the SFML libraries first by specifying LD_LIBRARY_PATH:
 # export LD_LIBRARY_PATH=<sfml-install-path>/lib && ./sfml-app
 
-quickhull: main.o Timing.o
+quickhull: main.o Timing.o Display.o
 	# link with sfml libs; -lsfml-network -lsfml-audio currently not needed
-	$(CXX) $(CXXFLAGS) -o quickhull main.o Timing.o -lsfml-system -lsfml-window -lsfml-graphics
+	$(CXX) $(CXXFLAGS) -o quickhull main.o Timing.o Display.o -lsfml-system -lsfml-window -lsfml-graphics
 
 main.o: main.cpp Timing.h
 	$(CXX) $(CXXFLAGS) -c main.cpp
 
+Display.o: Display.h
+
 Timing.o: Timing.h
 
 clean :
-	-rm *.o quickhull
\ No newline at end of file
+	-rm *.o quickhull