diff --git a/apptax/taxonomie/filemanager.py b/apptax/taxonomie/filemanager.py
index 6e4402d3..10c0e8ae 100644
--- a/apptax/taxonomie/filemanager.py
+++ b/apptax/taxonomie/filemanager.py
@@ -231,11 +231,16 @@ def url_to_image(url):
     """
         Récupération d'une image à partir d'une url
     """
+
     r = requests.get(url, stream=True)
+
+    if (r.status_code >= 400):
+        raise Exception("Pb with request : status code {}".format(r.status_code))
     try:
         img = Image.open(io.BytesIO(r.content))
     except IOError:
         raise Exception("Media is not an image")
+
     return img
 
 
diff --git a/gunicorn_start.sh b/gunicorn_start.sh
index f5e50cd7..217342c0 100755
--- a/gunicorn_start.sh
+++ b/gunicorn_start.sh
@@ -7,6 +7,13 @@ echo "$FLASKDIR"
 
 . "$FLASKDIR"/settings.ini
 
+if [ ! -z "$proxy_http" ] || [ ! -z "$proxy_https" ]
+then
+    echo "\$proxy_http is NOT empty"
+    export HTTP_PROXY="'$proxy_http'"
+    export HTTPS_PROXY="'$proxy_https'"
+fi
+
 # activate the virtualenv
 cd $FLASKDIR/$venv_dir
 source bin/activate
diff --git a/settings.ini.sample b/settings.ini.sample
index 732dc27f..5884fe72 100755
--- a/settings.ini.sample
+++ b/settings.ini.sample
@@ -66,3 +66,8 @@ insert_taxons_example=true
 gun_num_workers=4
 gun_host=0.0.0.0
 gun_port=5000
+
+# Proxy - si le serveur sur lequel se trouve Taxhub se trouve derrière un proxy
+# laisser vide si vous n'avez pas de proxy
+proxy_http=
+proxy_https=