diff --git a/tests/components/onvif/__init__.py b/tests/components/onvif/__init__.py
index 598546a6417..ae48dd26220 100644
--- a/tests/components/onvif/__init__.py
+++ b/tests/components/onvif/__init__.py
@@ -26,7 +26,7 @@ HOST = "1.2.3.4"
 PORT = 80
 USERNAME = "admin"
 PASSWORD = "12345"
-MAC = "aa:bb:cc:dd:ee"
+MAC = "aa:bb:cc:dd:ee:ff"
 SERIAL_NUMBER = "ABCDEFGHIJK"
 MANUFACTURER = "TestManufacturer"
 MODEL = "TestModel"
diff --git a/tests/components/onvif/snapshots/test_diagnostics.ambr b/tests/components/onvif/snapshots/test_diagnostics.ambr
index c4f692a4e61..68c92ec755d 100644
--- a/tests/components/onvif/snapshots/test_diagnostics.ambr
+++ b/tests/components/onvif/snapshots/test_diagnostics.ambr
@@ -23,7 +23,7 @@
       'pref_disable_polling': False,
       'source': 'user',
       'title': 'Mock Title',
-      'unique_id': 'aa:bb:cc:dd:ee',
+      'unique_id': 'aa:bb:cc:dd:ee:ff',
       'version': 1,
     }),
     'device': dict({
@@ -35,7 +35,7 @@
       }),
       'info': dict({
         'fw_version': 'TestFirmwareVersion',
-        'mac': 'aa:bb:cc:dd:ee',
+        'mac': 'aa:bb:cc:dd:ee:ff',
         'manufacturer': 'TestManufacturer',
         'model': 'TestModel',
         'serial_number': 'ABCDEFGHIJK',
diff --git a/tests/components/onvif/test_config_flow.py b/tests/components/onvif/test_config_flow.py
index 6133a382855..fcf0ea5c9dc 100644
--- a/tests/components/onvif/test_config_flow.py
+++ b/tests/components/onvif/test_config_flow.py
@@ -40,18 +40,14 @@ DISCOVERY = [
         config_flow.CONF_NAME: "TestCamera2",
         config_flow.CONF_HOST: "5.6.7.8",
         config_flow.CONF_PORT: PORT,
-        "MAC": "ee:dd:cc:bb:aa",
+        "MAC": "ff:ee:dd:cc:bb:aa",
     },
 ]
 DHCP_DISCOVERY = dhcp.DhcpServiceInfo(
-    hostname="any",
-    ip="5.6.7.8",
-    macaddress=MAC,
+    hostname="any", ip="5.6.7.8", macaddress=MAC.lower().replace(":", "")
 )
 DHCP_DISCOVERY_SAME_IP = dhcp.DhcpServiceInfo(
-    hostname="any",
-    ip="1.2.3.4",
-    macaddress=MAC,
+    hostname="any", ip="1.2.3.4", macaddress=MAC.lower().replace(":", "")
 )