diff --git a/app.py b/app.py
index 8834f4d..d21afb1 100644
--- a/app.py
+++ b/app.py
@@ -1347,6 +1347,19 @@ def delete_printer(id):
     conn.commit(); conn.close()
     return redirect(url_for('printers_page'))
 
+@app.route('/printers/<int:id>/edit', methods=['POST'])
+@login_required
+def edit_printer(id):
+    name      = request.form.get('name','').strip()
+    ha_prefix = request.form.get('ha_entity_prefix','').strip().lower()
+    notes     = request.form.get('notes','').strip()
+    if name:
+        conn = get_db()
+        conn.execute('UPDATE printers SET name=?, ha_entity_prefix=?, notes=? WHERE id=?',
+                     (name, ha_prefix, notes, id))
+        conn.commit(); conn.close()
+    return redirect(url_for('printers_page'))
+
 @app.route('/working-schedule', methods=['GET','POST'])
 def working_schedule():
     if request.method == 'POST':
diff --git a/templates/printers.html b/templates/printers.html
index 273bd5b..f2d37ed 100644
--- a/templates/printers.html
+++ b/templates/printers.html
@@ -38,6 +38,10 @@
               <td class="text-muted small">{{ p.notes or '—' }}</td>
               <td>
                 <div class="d-flex gap-1">
+                  <button class="btn btn-sm btn-outline-secondary py-0"
+                          onclick="openEditModal({{ p.id }}, '{{ p.name|replace("'","\\'") }}', '{{ p.ha_entity_prefix or '' }}', '{{ p.notes|replace("'","\\'")|default('') }}')">
+                    <i class="bi bi-pencil"></i>
+                  </button>
                   <form method="POST" action="{{ url_for('toggle_printer', id=p.id) }}">
                     <button class="btn btn-sm {% if p.is_active %}btn-outline-warning{% else %}btn-outline-success{% endif %} py-0">
                       {% if p.is_active %}<i class="bi bi-pause"></i>{% else %}<i class="bi bi-play"></i>{% endif %}
@@ -93,4 +97,52 @@
     </div>
   </div>
 </div>
+
+<!-- Modal édition imprimante -->
+<div class="modal fade" id="editPrinterModal" tabindex="-1">
+  <div class="modal-dialog">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title"><i class="bi bi-pencil me-2"></i>Modifier l'imprimante</h5>
+        <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+      </div>
+      <form id="editPrinterForm" method="POST">
+        <div class="modal-body">
+          <div class="mb-3">
+            <label class="form-label fw-semibold">Nom</label>
+            <input type="text" name="name" id="editName" class="form-control" required>
+          </div>
+          <div class="mb-3">
+            <label class="form-label fw-semibold">Préfixe Home Assistant <span class="text-muted fw-normal small">(optionnel)</span></label>
+            <input type="text" name="ha_entity_prefix" id="editHaPrefix" class="form-control font-monospace"
+                   placeholder="ex : patabambulab01">
+            <div class="form-text">Laisser vide pour désactiver la synchro HA.</div>
+          </div>
+          <div class="mb-3">
+            <label class="form-label fw-semibold">Notes</label>
+            <input type="text" name="notes" id="editNotes" class="form-control" placeholder="couleur, emplacement…">
+          </div>
+        </div>
+        <div class="modal-footer">
+          <button type="button" class="btn btn-outline-secondary" data-bs-dismiss="modal">Annuler</button>
+          <button type="submit" class="btn fw-bold" style="background:#ff6b35;color:#fff">
+            <i class="bi bi-save me-1"></i>Enregistrer
+          </button>
+        </div>
+      </form>
+    </div>
+  </div>
+</div>
+{% endblock %}
+
+{% block scripts %}
+<script>
+function openEditModal(id, name, haPrefix, notes) {
+  document.getElementById('editPrinterForm').action = '/printers/' + id + '/edit';
+  document.getElementById('editName').value = name;
+  document.getElementById('editHaPrefix').value = haPrefix;
+  document.getElementById('editNotes').value = notes;
+  new bootstrap.Modal(document.getElementById('editPrinterModal')).show();
+}
+</script>
 {% endblock %}