diff --git a/update-nutools b/update-nutools
index aafc055..4cf3ace 100755
--- a/update-nutools
+++ b/update-nutools
@@ -8,6 +8,8 @@ PUB_REPO=http://vcs.univ-reunion.fr/anongit/modules/nutools.git
 NAME=nutools
 
 ################################################################################
+[ -z "$update_nutools_use_proxy" ] && export http_proxy=
+
 CURL="$(which curl 2>/dev/null)"
 WGET="$(which wget 2>/dev/null)"
 if [ -n "$NUTOOLS_REPO" ]; then