diff --git a/Makefile b/Makefile
index 8aa12d7..19c58da 100644
--- a/Makefile
+++ b/Makefile
@@ -12,7 +12,7 @@ MemStripChart.o: MemStripChart.c
 	gcc $(CFLAGS) -c MemStripChart.c
 
 clean:
-	-rm xmem *.o
+	-rm xmem *.o *~
 
 install: xmem
 	install -d -m 755 $(DESTDIR)/usr/local/bin/