diff --git a/app/scodoc/sco_pvpdf.py b/app/scodoc/sco_pvpdf.py
index 315aedec7..623adaa43 100644
--- a/app/scodoc/sco_pvpdf.py
+++ b/app/scodoc/sco_pvpdf.py
@@ -27,13 +27,10 @@
 
 """Edition des PV de jury
 """
+import io
 import os
 import re
 
-try:
-    from io import StringIO  # for Python 3
-except ImportError:
-    from cStringIO import StringIO  # for Python 2
 import reportlab
 from reportlab.lib.units import cm, mm
 from reportlab.lib.enums import TA_LEFT, TA_RIGHT, TA_CENTER, TA_JUSTIFY
@@ -390,7 +387,7 @@ def pdf_lettres_individuelles(
     )
 
     # ----- Build PDF
-    report = StringIO.StringIO()  # in-memory document, no disk file
+    report = io.BytesIO()  # in-memory document, no disk file
     document = BaseDocTemplate(report)
     document.addPageTemplates(
         CourrierIndividuelTemplate(
@@ -590,7 +587,7 @@ def _make_signature_image(signature, leftindent, formsemestre_id, context=None):
     # cree une image PIL pour avoir la taille (W,H)
     from PIL import Image as PILImage
 
-    f = StringIO.StringIO(signature)
+    f = io.BytesIO(signature)
     im = PILImage.open(f)
     width, height = im.size
     pdfheight = (
@@ -674,7 +671,7 @@ def pvjury_pdf(
             )
 
     # ----- Build PDF
-    report = StringIO.StringIO()  # in-memory document, no disk file
+    report = io.BytesIO()  # in-memory document, no disk file
     document = BaseDocTemplate(report)
     document.pagesize = landscape(A4)
     document.addPageTemplates(
@@ -838,7 +835,7 @@ def _pvjury_pdf_type(
 
     def _format_pv_cell(x):
         """convert string to paragraph"""
-        if isinstance(x, bytes):
+        if isinstance(x, str):
             return Paragraph(SU(x), cell_style)
         else:
             return x
diff --git a/app/views/notes.py b/app/views/notes.py
index 2067981de..38095a1ad 100644
--- a/app/views/notes.py
+++ b/app/views/notes.py
@@ -2218,6 +2218,7 @@ sco_publish(
     "/formsemestre_lettres_individuelles",
     sco_pvjury.formsemestre_lettres_individuelles,
     Permission.ScoView,
+    methods=["GET", "POST"],
 )
 sco_publish(
     "/formsemestre_pvjury_pdf", sco_pvjury.formsemestre_pvjury_pdf, Permission.ScoView