--- doc/Makefile.am	2008-09-15 21:02:57.000000000 -0700
+++ doc/Makefile.am	2013-08-30 20:46:22.000000000 -0700
@@ -17,5 +17,5 @@ html/index.html: dirac_api.doxygen
 	doxygen $(srcdir)/dirac_api.doxygen
 
 install-data-hook:
-	cp -dR html/* $(DESTDIR)$(htmldir)
+	cp -R html/* $(DESTDIR)$(htmldir)