diff --git a/grandlyon_elyx/models.py b/grandlyon_elyx/models.py
index 6cd9e99..ab7c27e 100644
--- a/grandlyon_elyx/models.py
+++ b/grandlyon_elyx/models.py
@@ -6,7 +6,9 @@ import json
 import datetime
 
 from django.db import models
+from django.utils.encoding import force_text
 from django.utils.translation import ugettext_lazy as _
+
 from django.core.cache import cache
 
 from passerelle.base.models import BaseResource
@@ -92,7 +94,7 @@ class GrandlyonElyx(BaseResource):
     def create(self, request):
         # get creation fields from payload
         try:
-            formdata = FormData(json.loads(request.body), CREATION_SCHEMA)
+            formdata = FormData(json.loads(force_text(request.body)), CREATION_SCHEMA)
         except ValueError as e:
             raise ParameterTypeError(e.message)
 
@@ -128,7 +130,7 @@ class GrandlyonElyx(BaseResource):
 
         resp = self.send_post(send_request)
         #print >> open('/home/grandlyon/log/elyx.debug', 'a+'), datetime.datetime.now(), "resp.content:", resp.content
-        return {'data': json.loads(resp.content)}
+        return {'data': json.loads(force_text(resp.content))}
 
     @endpoint(perm='can_access')
     def status(self, request, iddemande):
@@ -137,7 +139,7 @@ class GrandlyonElyx(BaseResource):
         send_request = requests.Request()
         send_request.url = self.service_url+'/rr/Demandes?operation=suivi&id='+iddemande
         resp = self.send_get(send_request)
-        data = json.loads(resp.content)
+        data = json.loads(force_text(resp.content))
 
 
         if data['EtatDemande'] == "DEMANDE_DISPO":
@@ -146,7 +148,7 @@ class GrandlyonElyx(BaseResource):
             file_request.url = self.service_url+'/rs/ReadResource?url='+data['Url']
             #print >> open('/home/grandlyon/log/elyx.debug', 'a+'), datetime.datetime.now(), "file url:", file_request.url
             file_resp = self.send_get(file_request)
-            file = {'b64_content': base64.b64encode(file_resp.content), 'filename': 'certificat.pdf'}
+            file = {'b64_content': force_text(base64.b64encode(file_resp.content)), 'filename': 'certificat.pdf'}
 
             #print >> open('/home/grandlyon/log/elyx.pdf', 'a+'), datetime.datetime.now(), file_resp.content