diff --git a/app/templates/assiduites/pages/calendrier.j2 b/app/templates/assiduites/pages/calendrier.j2
index 76ab5eb3a9..ce8e9e0f1f 100644
--- a/app/templates/assiduites/pages/calendrier.j2
+++ b/app/templates/assiduites/pages/calendrier.j2
@@ -336,19 +336,21 @@
 
     }
     const defAnnee = {{ annee }}
+    let annees = {{ annees | safe }}
+    annees = annees.filter((x, i) => annees.indexOf(x) === i)
     const etudid = {{ sco.etud.id }};
     const nonwork = [{{ nonworkdays | safe }}];
     window.onload = () => {
         const select = document.querySelector('#annee');
-        for (let i = defAnnee + 1; i > defAnnee - 6; i--) {
+        annees.forEach((a) => {
             const opt = document.createElement("option");
-            opt.value = i + "",
-                opt.textContent = i + "";
-            if (i === defAnnee) {
+            opt.value = a + "",
+                opt.textContent = `${a} - ${a + 1}`;
+            if (a === defAnnee) {
                 opt.selected = true;
             }
             select.appendChild(opt)
-        }
+        })
         setterAnnee(defAnnee)
     };
 
diff --git a/app/templates/assiduites/widgets/minitimeline.j2 b/app/templates/assiduites/widgets/minitimeline.j2
index 811fd19374..f3febd833b 100644
--- a/app/templates/assiduites/widgets/minitimeline.j2
+++ b/app/templates/assiduites/widgets/minitimeline.j2
@@ -162,7 +162,11 @@
             userIdDiv.textContent = `saisi le ${formatDateModal(
                 assiduite.entry_date,
                 "à"
-            )} \npar ${assiduite.user_id}`;
+            )}`;
+
+            if (assiduite.user_id != null) {
+                userIdDiv.textContent += `\npar ${assiduite.user_id}`
+            }
             bubble.appendChild(userIdDiv);
 
             bubble.style.left = `${event.clientX - bubble.offsetWidth / 2}px`;
diff --git a/app/views/assiduites.py b/app/views/assiduites.py
index b11e6b1159..0969c4aed5 100644
--- a/app/views/assiduites.py
+++ b/app/views/assiduites.py
@@ -417,6 +417,16 @@ def calendrier_etud():
         ],
     )
 
+    annees: list[int] = sorted(
+        [ins.formsemestre.date_debut.year for ins in etud.formsemestre_inscriptions],
+        reverse=True,
+    )
+
+    annees_str: str = "["
+    for ann in annees:
+        annees_str += f"{ann},"
+    annees_str += "]"
+
     return HTMLBuilder(
         header,
         render_template(
@@ -425,6 +435,7 @@ def calendrier_etud():
             annee=scu.annee_scolaire(),
             nonworkdays=_non_work_days(),
             minitimeline=_mini_timeline(),
+            annees=annees_str,
         ),
     ).build()