diff --git a/Makefile b/Makefile
index 0cca110b62d164c2407c4d8778f8abcc7be4d9b6..e35b77efcdea2301fff2954e53f19639228aa164 100644
--- a/Makefile
+++ b/Makefile
@@ -4,8 +4,9 @@ exits.o: exits.h
 cmd.o: cmd.h game.h exits.h mobile.h location.h
 mobile.o: mobile.h exits.h
 location.o: location.h exits.h
-game.o: game.h location.h mobile.h exits.h
-WorldOfIUT.o: cmd.h exits.h mobile.h game.h location.h
-WorldOfIUT: WorldOfIUT.o cmd.o mobile.o location.o game.o exits.o
+stack.o: stack.h exit.h
+game.o: game.h location.h mobile.h exits.h stack.h
+WorldOfIUT.o: cmd.h exits.h mobile.h game.h location.h stack.h
+WorldOfIUT: WorldOfIUT.o cmd.o mobile.o location.o game.o exits.o stack.o
 clean:
 	/bin/rm *.o WorldOfIUT