diff --git a/app/scodoc/sco_liste_notes.py b/app/scodoc/sco_liste_notes.py
index 402073b51..48ff7ce7b 100644
--- a/app/scodoc/sco_liste_notes.py
+++ b/app/scodoc/sco_liste_notes.py
@@ -517,18 +517,19 @@ def _make_table_notes(
                 hh += "s"
             hh += ", %d en attente." % (nb_att)
 
-            pdf_title = "<br> BORDEREAU DE SIGNATURES"
-            pdf_title += "<br><br>%(titre)s" % sem
-            pdf_title += "<br>(%(mois_debut)s - %(mois_fin)s)" % sem
+            # Attention: ReportLab supporte seulement '<br/>', pas '<br>' !
+            pdf_title = "<br/> BORDEREAU DE SIGNATURES"
+            pdf_title += "<br/><br/>%(titre)s" % sem
+            pdf_title += "<br/>(%(mois_debut)s - %(mois_fin)s)" % sem
             pdf_title += " semestre %s %s" % (
                 sem["semestre_id"],
                 sem.get("modalite", ""),
             )
-            pdf_title += f"<br>Notes du module {module.code} - {module.titre}"
-            pdf_title += "<br>Evaluation : %(description)s " % e
+            pdf_title += f"<br/>Notes du module {module.code} - {module.titre}"
+            pdf_title += "<br/>Évaluation : %(description)s " % e
             if len(e["jour"]) > 0:
                 pdf_title += " (%(jour)s)" % e
-            pdf_title += "(noté sur %(note_max)s )<br><br>" % e
+            pdf_title += "(noté sur %(note_max)s )<br/><br/>" % e
         else:
             hh = " %s, %s (%d étudiants)" % (
                 E["description"],
diff --git a/app/scodoc/sco_preferences.py b/app/scodoc/sco_preferences.py
index 3ceba6085..0223c7b63 100644
--- a/app/scodoc/sco_preferences.py
+++ b/app/scodoc/sco_preferences.py
@@ -1008,7 +1008,7 @@ class BasePreferences(object):
             (
                 "PV_LETTER_DIPLOMA_SIGNATURE",
                 {
-                    "initvalue": """Le %(DirectorTitle)s, <br>%(DirectorName)s""",
+                    "initvalue": """Le %(DirectorTitle)s, <br/>%(DirectorName)s""",
                     "title": """Signature des lettres individuelles de diplôme""",
                     "explanation": """%(DirectorName)s et %(DirectorTitle)s remplacés""",
                     "input_type": "textarea",
@@ -1020,8 +1020,8 @@ class BasePreferences(object):
             (
                 "PV_LETTER_PASSAGE_SIGNATURE",
                 {
-                    "initvalue": """Pour le Directeur de l'IUT<br>
-                        et par délégation<br>
+                    "initvalue": """Pour le Directeur de l'IUT<br/>
+                        et par délégation<br/>
                         Le Chef du département""",
                     "title": """Signature des lettres individuelles de passage d'un semestre à l'autre""",
                     "explanation": """%(DirectorName)s et %(DirectorTitle)s remplacés""",
@@ -1056,7 +1056,7 @@ class BasePreferences(object):
                         <para leftindent="%(pv_htab1)s">%(codepostaldomicile)s %(villedomicile)s</para>
 
                         <para spaceBefore="25mm" fontSize="14" alignment="center">
-                        <b>Jury de %(type_jury)s  <br> %(titre_formation)s</b>
+                        <b/>Jury de %(type_jury)s  <br/> %(titre_formation)s</b>
                         </para>
 
                         <para spaceBefore="10mm" fontSize="14" leftindent="0">
@@ -1499,7 +1499,7 @@ class BasePreferences(object):
                 "bul_pdf_sig_left",
                 {
                     "initvalue": """<para>La direction des études
-                        <br>
+                        <br/>
                         %(responsable)s
                         </para>
                         """,
@@ -1515,7 +1515,7 @@ class BasePreferences(object):
                 "bul_pdf_sig_right",
                 {
                     "initvalue": """<para>Le chef de département
-                        <br>
+                        <br/>
                         %(ChiefDeptName)s
                         </para>
                         """,
diff --git a/app/scodoc/sco_pvpdf.py b/app/scodoc/sco_pvpdf.py
index f1dae2536..a0fbf6cdf 100644
--- a/app/scodoc/sco_pvpdf.py
+++ b/app/scodoc/sco_pvpdf.py
@@ -341,10 +341,10 @@ def _simulate_br(paragraph_txt: str, para="<para>") -> str:
     """Reportlab bug turnaround (could be removed in a future version).
     p is a string with Reportlab intra-paragraph XML tags.
     Replaces <br> (currently ignored by Reportlab) by </para><para>
-    Also replaces <br> by <br>
+    Also replaces <br> by <br/>
     """
     return ("</para>" + para).join(
-        re.split(r"<.*?br.*?/>", paragraph_txt.replace("<br>", "<br>"))
+        re.split(r"<.*?br.*?/>", paragraph_txt.replace("<br>", "<br/>"))
     )
 
 
@@ -515,7 +515,7 @@ def pdf_lettre_individuelle(sem, decision, etud: Identite, params, signature=Non
     params.update(decision["identite"])
     # fix domicile
     if params["domicile"]:
-        params["domicile"] = params["domicile"].replace("\\n", "<br>")
+        params["domicile"] = params["domicile"].replace("\\n", "<br/>")
 
     # UE capitalisées:
     if decision["decisions_ue"] and decision["decisions_ue_descr"]:
@@ -649,8 +649,8 @@ def add_apc_infos(formsemestre: FormSemestre, params: dict, decision: dict):
         params["decision_sem_descr"] = decision_annee.get("code") or ""
         params[
             "decision_ue_txt"
-        ] = f"""{params["decision_ue_txt"]}<br>
-            <b>Niveaux de compétences:</b><br> {decision.get("descr_decisions_rcue") or ""}
+        ] = f"""{params["decision_ue_txt"]}<br/>
+            <b>Niveaux de compétences:</b><br/> {decision.get("descr_decisions_rcue") or ""}
         """
 
 
diff --git a/sco_version.py b/sco_version.py
index 1a07329d4..82c30e9ae 100644
--- a/sco_version.py
+++ b/sco_version.py
@@ -1,7 +1,7 @@
 # -*- mode: python -*-
 # -*- coding: utf-8 -*-
 
-SCOVERSION = "9.3.51"
+SCOVERSION = "9.3.52"
 
 SCONAME = "ScoDoc"