diff --git a/app.py b/app.py
index 052fa61..8b88bd1 100644
--- a/app.py
+++ b/app.py
@@ -282,11 +282,12 @@ async def check_single_device(device_id: int):
         from datetime import datetime
         info = get_wled_info(dev["hostname"])
         conn.execute("""
-            UPDATE wled_devices SET online=?, leds=?, version=?, last_check=? WHERE id=?
+            UPDATE wled_devices SET online=?, leds=?, version=?, mac=?, last_check=? WHERE id=?
         """, (
             1 if info.get("online") else 0,
             info.get("leds", 0) if info.get("online") else 0,
             info.get("version", "") if info.get("online") else "",
+            info.get("mac", "") if info.get("online") else "",
             datetime.now(), device_id,
         ))
         conn.commit()
diff --git a/database.py b/database.py
index a54f2ed..d034d7a 100644
--- a/database.py
+++ b/database.py
@@ -94,6 +94,10 @@ def init_db():
         conn.execute("ALTER TABLE wled_devices ADD COLUMN last_check TIMESTAMP")
     except Exception:
         pass
+    try:
+        conn.execute("ALTER TABLE wled_devices ADD COLUMN mac TEXT DEFAULT ''")
+    except Exception:
+        pass
     try:
         conn.execute("ALTER TABLE users ADD COLUMN phone_extension TEXT DEFAULT ''")
     except Exception:
diff --git a/scheduler.py b/scheduler.py
index 48d5c76..6e47ef1 100644
--- a/scheduler.py
+++ b/scheduler.py
@@ -210,12 +210,13 @@ def check_devices():
             info = get_wled_info(dev["hostname"])
             conn.execute("""
                 UPDATE wled_devices
-                SET online=?, leds=?, version=?, last_check=?
+                SET online=?, leds=?, version=?, mac=?, last_check=?
                 WHERE id=?
             """, (
                 1 if info.get("online") else 0,
                 info.get("leds", 0) if info.get("online") else 0,
                 info.get("version", "") if info.get("online") else "",
+                info.get("mac", "") if info.get("online") else "",
                 datetime.now(),
                 dev["id"],
             ))
diff --git a/templates/devices.html b/templates/devices.html
index df0952e..151eabb 100644
--- a/templates/devices.html
+++ b/templates/devices.html
@@ -29,6 +29,7 @@
                                 <th>Name</th>
                                 <th>LEDs</th>
                                 <th>Version</th>
+                                <th>MAC</th>
                                 <th>Letzte Aktivitaet</th>
                                 <th>Segmente</th>
                                 <th>Aktionen</th>
@@ -54,6 +55,7 @@
                                 <td>{{ device.name }}</td>
                                 <td>{{ device.leds if device.leds else '-' }}</td>
                                 <td>{{ device.version if device.version else '-' }}</td>
+                                <td><small class="font-monospace">{{ device.mac if device.mac else '-' }}</small></td>
                                 <td><small>{{ device.last_activity or '-' }}</small></td>
                                 <td>{{ device.segment_count }}</td>
                                 <td>
@@ -114,7 +116,7 @@
 
                             {% if not devices %}
                             <tr>
-                                <td colspan="8" class="text-center text-muted py-4">
+                                <td colspan="9" class="text-center text-muted py-4">
                                     Noch keine Tuerschilder vorhanden.
                                 </td>
                             </tr>