diff --git a/tests/components/flux_led/__init__.py b/tests/components/flux_led/__init__.py
index 34f592110d0..80f072328d6 100644
--- a/tests/components/flux_led/__init__.py
+++ b/tests/components/flux_led/__init__.py
@@ -28,6 +28,7 @@ from homeassistant.components.flux_led.const import DOMAIN
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_HOST, CONF_NAME
 from homeassistant.core import HomeAssistant
+from homeassistant.helpers.device_registry import format_mac
 
 from tests.common import MockConfigEntry
 
@@ -50,7 +51,7 @@ DEFAULT_ENTRY_TITLE = f"{MODEL_DESCRIPTION} {SHORT_MAC_ADDRESS}"
 DHCP_DISCOVERY = dhcp.DhcpServiceInfo(
     hostname=MODEL,
     ip=IP_ADDRESS,
-    macaddress=MAC_ADDRESS,
+    macaddress=format_mac(MAC_ADDRESS).replace(":", ""),
 )
 FLUX_DISCOVERY_PARTIAL = FluxLEDDiscovery(
     ipaddr=IP_ADDRESS,
diff --git a/tests/components/flux_led/test_config_flow.py b/tests/components/flux_led/test_config_flow.py
index f77233f7a3f..008661303f1 100644
--- a/tests/components/flux_led/test_config_flow.py
+++ b/tests/components/flux_led/test_config_flow.py
@@ -402,7 +402,7 @@ async def test_discovered_by_discovery_and_dhcp(hass: HomeAssistant) -> None:
             data=dhcp.DhcpServiceInfo(
                 hostname="any",
                 ip=IP_ADDRESS,
-                macaddress="00:00:00:00:00:00",
+                macaddress="000000000000",
             ),
         )
         await hass.async_block_till_done()