diff --git a/docs/PLUGINS_DEV.md b/docs/PLUGINS_DEV.md
index 7641ae4e..ada22149 100755
--- a/docs/PLUGINS_DEV.md
+++ b/docs/PLUGINS_DEV.md
@@ -12,7 +12,7 @@ NetAlertX comes with a plugin system to feed events from third-party scripts int
 
 ### 🎥 Watch the video:
 
-[![Watch the video](/docs/img/YouTube_thumbnail.png)](https://youtu.be/bjA7wIK_jXY)
+[![Watch the video](/docs/img/YouTube_thumbnail.png)](https://youtu.be/cdbxlwiWhv8)
 
 ### 📸 Screenshots
 
diff --git a/front/plugins/plugin_helper.py b/front/plugins/plugin_helper.py
index 4c031926..27f1f953 100755
--- a/front/plugins/plugin_helper.py
+++ b/front/plugins/plugin_helper.py
@@ -79,6 +79,22 @@ def decodeBase64(inputParamBase64):
 
     return result
 
+# -------------------------------------------------------------------
+def normalize_mac(mac):
+    # Split the MAC address by colon (:) or hyphen (-) and convert each part to uppercase
+    parts = mac.upper().split(':')
+    
+    # If the MAC address is split by hyphen instead of colon
+    if len(parts) == 1:
+        parts = mac.upper().split('-')
+
+    # Normalize each part to have exactly two hexadecimal digits
+    normalized_parts = [part.zfill(2) for part in parts]
+
+    # Join the parts with colon (:)
+    normalized_mac = ':'.join(normalized_parts)
+    
+    return normalized_mac
 
 # -------------------------------------------------------------------
 class Plugin_Object:
diff --git a/front/plugins/snmp_discovery/script.py b/front/plugins/snmp_discovery/script.py
index cc11fff3..f1d041db 100755
--- a/front/plugins/snmp_discovery/script.py
+++ b/front/plugins/snmp_discovery/script.py
@@ -11,7 +11,7 @@ import sys
 INSTALL_PATH="/app"
 sys.path.extend([f"{INSTALL_PATH}/front/plugins", f"{INSTALL_PATH}/server"])
 
-from plugin_helper import Plugin_Object, Plugin_Objects, decodeBase64, handleEmpty
+from plugin_helper import Plugin_Object, Plugin_Objects, decodeBase64, handleEmpty, normalize_mac
 from logger import mylog
 from helper import timeNowTZ
 from const import logPath, applicationPath
@@ -91,7 +91,7 @@ def main():
                         if len(parts) == 2:
 
                             ipAddress  = parts[0].split('[')[-1][:-1]
-                            macAddress = parts[1]
+                            macAddress = normalize_mac(parts[1])
 
                             mylog('verbose', [f'[SNMPDSC] IP: {ipAddress} MAC: {macAddress}'])