diff --git a/app_new/interventions/crud.py b/app_new/interventions/crud.py
index 20788fe..a5cf11e 100644
--- a/app_new/interventions/crud.py
+++ b/app_new/interventions/crud.py
@@ -24,7 +24,7 @@ from ..core.models.college import Room
 from ..core.models.company import Service, Company
 from app_new.constants import INTERVENTION_STATUSES, INTERVENTION_TRANSITIONS, PRIORITIES, WORKFLOW_TYPES, WORKFLOW_STATUS_ORDERS
 
-interventions_bp = Blueprint('interventions', __name__)
+interventions_bp = Blueprint('interventions', __name__, template_folder='templates')
 
 
 @interventions_bp.route('/')
@@ -404,7 +404,9 @@ def detail(id):
     transitions = [(key, value['label']) for key, value in INTERVENTION_STATUSES.items()
                    if key in INTERVENTION_TRANSITIONS.get(intervention.status, set()) and key in allowed_workflow_statuses]
     history = intervention.status_history.order_by(StatusChange.created_at.desc()).all()
-    return render_template('interventions/detail.html',
+    # Utiliser explicitement le template du module. Une ancienne copie globale
+    # de ``interventions/detail.html`` est conservée pour compatibilité.
+    return render_template('detail.html',
                          intervention=intervention,
                          statuses=INTERVENTION_STATUSES,
                          transitions=transitions,