diff --git a/test/syscall_tests/Makefile b/test/syscall_tests/Makefile
index 13adddc..40e1364 100644
--- a/test/syscall_tests/Makefile
+++ b/test/syscall_tests/Makefile
@@ -1,5 +1,5 @@
 
-PROGRAMS = halt prints
+PROGRAMS = halt.guac prints.guac
 
 build: $(PROGRAMS)
 
@@ -8,9 +8,9 @@ dumps: halt.dump prints.dump
 tests: halt.guac prints.guac
 
 clean:
-	$(RM) halt.o halt prints prints.o 
+	$(RM) halt.o prints.o 
 
 TOPDIR = ../..
 include $(TOPDIR)/Makefile.rules
 
-$(PROGRAMS): % : $(USERLIB)/sys.o $(USERLIB)/libnachos.o %.o
\ No newline at end of file
+$(PROGRAMS): %.guac : $(USERLIB)/sys.o $(USERLIB)/libnachos.o %.o