diff --git a/app/scodoc/sco_inscr_passage.py b/app/scodoc/sco_inscr_passage.py
index be1f58452..4fb8c57ac 100644
--- a/app/scodoc/sco_inscr_passage.py
+++ b/app/scodoc/sco_inscr_passage.py
@@ -343,15 +343,19 @@ def formsemestre_inscr_passage(
                         % inscrits[etudid]
                     )
                 H.append("</ol>")
-            if not a_inscrire and not a_desinscrire:
+            todo = a_inscrire or a_desinscrire
+            if not todo:
                 H.append("""<h3>Il n'y a rien à modifier !</h3>""")
             H.append(
                 scu.confirm_dialog(
-                    dest_url="formsemestre_inscr_passage",
+                    dest_url="formsemestre_inscr_passage"
+                    if todo
+                    else "formsemestre_status",
+                    message="<p>Confirmer ?</p>" if todo else "",
                     add_headers=False,
                     cancel_url="formsemestre_inscr_passage?formsemestre_id="
                     + str(formsemestre_id),
-                    OK="Effectuer l'opération",
+                    OK="Effectuer l'opération" if todo else "",
                     parameters={
                         "formsemestre_id": formsemestre_id,
                         "etuds": ",".join([str(x) for x in etuds]),
diff --git a/app/scodoc/sco_utils.py b/app/scodoc/sco_utils.py
index dbd353c6f..705277025 100644
--- a/app/scodoc/sco_utils.py
+++ b/app/scodoc/sco_utils.py
@@ -876,9 +876,10 @@ def confirm_dialog(
     H = [
         f"""<form {action} method="POST">
         {message}
-        <input type="submit" value="{OK}"/>
         """,
     ]
+    if OK or not cancel_url:
+        H.append(f'<input type="submit" value="{OK}"/>')
     if cancel_url:
         H.append(
             """<input type ="button" value="%s"