diff --git a/app/scodoc/sco_photos.py b/app/scodoc/sco_photos.py
index 7ccf159f..5c1cfacf 100644
--- a/app/scodoc/sco_photos.py
+++ b/app/scodoc/sco_photos.py
@@ -43,6 +43,7 @@ Les images sont servies par ScoDoc, via la méthode getphotofile?etudid=xxx
 
 """
 
+import io
 import os
 import time
 import datetime
@@ -51,7 +52,6 @@ import six.moves.urllib.request, six.moves.urllib.error, six.moves.urllib.parse
 import traceback
 from PIL import Image as PILImage
 
-from io import StringIO
 import glob
 
 from flask import request
@@ -238,7 +238,7 @@ def photo_pathname(context, etud, size="orig"):
 def store_photo(context, etud, data, REQUEST=None):
     """Store image for this etud.
     If there is an existing photo, it is erased and replaced.
-    data is a string with image raw data.
+    data is a bytes string with image raw data.
 
     Update database to store filename.
 
@@ -296,7 +296,7 @@ def save_image(context, etudid, data):
     Save image in JPEG in 2 sizes (original and h90).
     Returns filename (relative to PHOTO_DIR), without extension
     """
-    data_file = StringIO()
+    data_file = io.BytesIO()
     data_file.write(data)
     data_file.seek(0)
     img = PILImage.open(data_file)
diff --git a/app/views/scolar.py b/app/views/scolar.py
index 2cd85a76..d5bf596a 100644
--- a/app/views/scolar.py
+++ b/app/views/scolar.py
@@ -791,7 +791,7 @@ def formChangePhoto(context, etudid=None, REQUEST=None):
     elif tf[0] == -1:
         return REQUEST.RESPONSE.redirect(dest_url)
     else:
-        data = tf[2]["photofile"][0].read()
+        data = tf[2]["photofile"].read()
         status, diag = sco_photos.store_photo(context, etud, data, REQUEST=REQUEST)
         if status != 0:
             return REQUEST.RESPONSE.redirect(dest_url)