diff --git a/Makefile b/Makefile
index 3f8755c..ef908d7 100644
--- a/Makefile
+++ b/Makefile
@@ -113,7 +113,7 @@ fs.img: mkfs README $(UPROGS)
 -include *.d
 
 clean: 
-	rm -f *.ps *.tex *.dvi *.idx *.aux *.log *.ind *.ilg \
+	rm -f *.tex *.dvi *.idx *.aux *.log *.ind *.ilg \
 	*.o *.d *.asm *.sym vectors.S parport.out \
 	bootblock kernel xv6.img fs.img mkfs \
 	$(UPROGS)