--- Makefile.orig	2014-01-14 17:04:37.000000000 +0100
+++ Makefile
@@ -1,6 +1,6 @@
 -include Makefile.config
 
-LOCAL_OCPBUILD=./ocp-build/ocp-build -no-use-ocamlfind
+LOCAL_OCPBUILD=./ocp-build/ocp-build -no-use-ocamlfind -no-user-prefs
 OCPBUILD ?= $(LOCAL_OCPBUILD)
 SRC_EXT=src_ext
 TARGETS = opam opam-admin opam-installer