diff --git a/Modules/Makefile.pre.in b/Modules/Makefile.pre.in
index 4827e9b..fc9bf3f 100644
--- a/Modules/Makefile.pre.in
+++ b/Modules/Makefile.pre.in
@@ -125,7 +125,7 @@
 
 clobber:	clean
 		-rm -f *.a tags TAGS config.c glmodule.c Makefile.pre
-		-rm -f *.so so_locations
+		-rm -f *.so *.sl so_locations
 
 getpath.o:	getpath.c Makefile
 		$(CC) -c $(CFLAGS) -DPYTHONPATH='"$(PYTHONPATH)"' \