diff --git a/loko/interventions/views/calendar.py b/loko/interventions/views/calendar.py
index 41a7eed..6292624 100644
--- a/loko/interventions/views/calendar.py
+++ b/loko/interventions/views/calendar.py
@@ -1506,19 +1506,7 @@ def member_history_ajax(request, member_id):
         )
     company_str = ", ".join(sorted(company_names)) if company_names else '—'
 
-    # Filter assignments:
-    # 1. Directly assigned to this member in InterventionAssignment
-    assignment_q = Q(member=member)
-
-    # 2. Directly assigned / acted upon by member user on Intervention
-    if member.user_id:
-        assignment_q |= (
-            Q(intervention__assigned_member=member) |
-            Q(intervention__realized_events__event_user=member.user) |
-            Q(intervention__occupations__member=member)
-        )
-
-    # 3. Interventions assigned to teams during the periods member was in that team
+    # 1. Équipes et périodes valides du membre selon CompanyMemberHistory
     team_periods_q = Q()
     for h in team_history_qs:
         if h.team_id and h.join_date:
@@ -1527,10 +1515,8 @@ def member_history_ajax(request, member_id):
                 tq &= Q(date__lte=h.leave_date)
             team_periods_q |= tq
 
-    for t in member.teams.all():
-        if not team_history_qs.filter(team=t).exists():
-            team_periods_q |= Q(team=t)
-
+    # 2. Récupérer les affectations d'interventions liées au membre
+    assignment_q = Q(member=member)
     if team_periods_q:
         assignment_q |= team_periods_q
 
@@ -1538,26 +1524,31 @@ def member_history_ajax(request, member_id):
         InterventionAssignment.objects
         .filter(assignment_q)
         .select_related('intervention', 'team')
-        .order_by('-date', '-intervention__code', '-intervention__id')[:100]
+        .order_by('-date', '-intervention__id')
     )
 
-    interventions_list = [
-        {
-            'id': a.intervention.id,
-            'code': a.intervention.code,
-            'title': a.intervention.title,
+    # 3. Dédoublonnage strict par ID d'intervention
+    seen_itv_ids = set()
+    interventions_dict = {}
+
+    for a in assignments_qs:
+        itv = a.intervention
+        if not itv or itv.id in seen_itv_ids:
+            continue
+        seen_itv_ids.add(itv.id)
+        interventions_dict[itv.id] = {
+            'id': itv.id,
+            'code': itv.code,
+            'title': itv.title,
             'date': a.date.strftime('%d/%m/%Y') if a.date else '',
             'raw_date': a.date.isoformat() if a.date else '',
-            'team_name': a.team.name if a.team else (a.intervention.assigned_team.name if a.intervention.assigned_team else '—'),
-            'status_code': a.intervention.status,
-            'status_display': a.intervention.get_status_display(),
-            'detail_url': reverse('interventions:intervention_detail', args=[a.intervention.id]),
+            'team_name': a.team.name if a.team else (itv.assigned_team.name if itv.assigned_team else '—'),
+            'status_code': itv.status,
+            'status_display': itv.get_status_display(),
+            'detail_url': reverse('interventions:intervention_detail', args=[itv.id]),
         }
-        for a in assignments_qs
-    ]
 
-    # Include any extra interventions directly assigned/realized by member without an InterventionAssignment
-    assigned_itv_ids = set(a.intervention.id for a in assignments_qs)
+    # 4. Interventions directement assignées ou réalisées personnellement par le membre
     direct_itvs_q = Q(assigned_member=member)
     if member.user_id:
         direct_itvs_q |= Q(realized_events__event_user=member.user) | Q(occupations__member=member)
@@ -1565,10 +1556,16 @@ def member_history_ajax(request, member_id):
     extra_itvs = (
         Intervention.objects
         .filter(direct_itvs_q)
-        .exclude(id__in=assigned_itv_ids)
-        .select_related('assigned_team')[:50]
+        .exclude(id__in=seen_itv_ids)
+        .select_related('assigned_team')
+        .distinct()[:50]
     )
+
     for itv in extra_itvs:
+        if itv.id in seen_itv_ids:
+            continue
+        seen_itv_ids.add(itv.id)
+
         itv_date = (itv.end_time or itv.begin_time or itv.planned_begin_time or itv.creation_time)
         if itv_date:
             itv_date_local = timezone.localtime(itv_date) if timezone.is_aware(itv_date) else itv_date
@@ -1578,7 +1575,7 @@ def member_history_ajax(request, member_id):
             date_str = ''
             raw_date_str = ''
 
-        interventions_list.append({
+        interventions_dict[itv.id] = {
             'id': itv.id,
             'code': itv.code,
             'title': itv.title,
@@ -1588,10 +1585,11 @@ def member_history_ajax(request, member_id):
             'status_code': itv.status,
             'status_display': itv.get_status_display(),
             'detail_url': reverse('interventions:intervention_detail', args=[itv.id]),
-        })
+        }
 
+    interventions_list = list(interventions_dict.values())
     interventions_list.sort(key=lambda x: (x['raw_date'], x['code'] or '', x['id']), reverse=True)
-    interventions_list = interventions_list[:100]
+    interventions_list = interventions_list[:50]
 
     return JsonResponse({
         'member': {