fix the rule to install UPGRADE.md

diff --git a/Makefile b/Makefile
index 8a4677a57646093ea6f137587b8368430d6a68ee..105386e2c03d2f6950d661557d45a63bec287bd4 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -44,7 +44,7 @@ clean:
 
 install: install_mostfiles
        # install basic debbugs documentation
-       $(install_data) COPYING UPGRADE README.md debian/README.mail $(doc_dir)
+       $(install_data) COPYING UPGRADE.md README.md debian/README.mail $(doc_dir)
        $(MAKE) -f Makefile.perl install DESTDIR=$(DESTDIR)
 
 install_mostfiles: