diff --git a/tests/components/lifx/__init__.py b/tests/components/lifx/__init__.py
index dadb57d09ad211..bb798f6f8a04c2 100644
--- a/tests/components/lifx/__init__.py
+++ b/tests/components/lifx/__init__.py
@@ -17,6 +17,7 @@
 GROUP = "My Group"
 SERIAL = "aa:bb:cc:dd:ee:cc"
 MAC_ADDRESS = "aa:bb:cc:dd:ee:cd"
+DHCP_FORMATTED_MAC = "aabbccddeecd"
 DEFAULT_ENTRY_TITLE = LABEL
 
 
diff --git a/tests/components/lifx/test_config_flow.py b/tests/components/lifx/test_config_flow.py
index 702841061667a2..a934c0ce831b7b 100644
--- a/tests/components/lifx/test_config_flow.py
+++ b/tests/components/lifx/test_config_flow.py
@@ -17,9 +17,9 @@
 
 from . import (
     DEFAULT_ENTRY_TITLE,
+    DHCP_FORMATTED_MAC,
     IP_ADDRESS,
     LABEL,
-    MAC_ADDRESS,
     MODULE,
     SERIAL,
     _mocked_bulb,
@@ -345,7 +345,7 @@ async def test_discovered_by_discovery_and_dhcp(hass: HomeAssistant) -> None:
             DOMAIN,
             context={"source": config_entries.SOURCE_DHCP},
             data=dhcp.DhcpServiceInfo(
-                ip=IP_ADDRESS, macaddress=MAC_ADDRESS, hostname=LABEL
+                ip=IP_ADDRESS, macaddress=DHCP_FORMATTED_MAC, hostname=LABEL
             ),
         )
         await hass.async_block_till_done()
@@ -357,7 +357,7 @@ async def test_discovered_by_discovery_and_dhcp(hass: HomeAssistant) -> None:
             DOMAIN,
             context={"source": config_entries.SOURCE_DHCP},
             data=dhcp.DhcpServiceInfo(
-                ip=IP_ADDRESS, macaddress="00:00:00:00:00:00", hostname="mock_hostname"
+                ip=IP_ADDRESS, macaddress="000000000000", hostname="mock_hostname"
             ),
         )
         await hass.async_block_till_done()
@@ -371,7 +371,7 @@ async def test_discovered_by_discovery_and_dhcp(hass: HomeAssistant) -> None:
             DOMAIN,
             context={"source": config_entries.SOURCE_DHCP},
             data=dhcp.DhcpServiceInfo(
-                ip="1.2.3.5", macaddress="00:00:00:00:00:01", hostname="mock_hostname"
+                ip="1.2.3.5", macaddress="000000000001", hostname="mock_hostname"
             ),
         )
         await hass.async_block_till_done()
@@ -384,7 +384,9 @@ async def test_discovered_by_discovery_and_dhcp(hass: HomeAssistant) -> None:
     [
         (
             config_entries.SOURCE_DHCP,
-            dhcp.DhcpServiceInfo(ip=IP_ADDRESS, macaddress=MAC_ADDRESS, hostname=LABEL),
+            dhcp.DhcpServiceInfo(
+                ip=IP_ADDRESS, macaddress=DHCP_FORMATTED_MAC, hostname=LABEL
+            ),
         ),
         (
             config_entries.SOURCE_HOMEKIT,
@@ -439,7 +441,9 @@ async def test_discovered_by_dhcp_or_discovery(
     [
         (
             config_entries.SOURCE_DHCP,
-            dhcp.DhcpServiceInfo(ip=IP_ADDRESS, macaddress=MAC_ADDRESS, hostname=LABEL),
+            dhcp.DhcpServiceInfo(
+                ip=IP_ADDRESS, macaddress=DHCP_FORMATTED_MAC, hostname=LABEL
+            ),
         ),
         (
             config_entries.SOURCE_HOMEKIT,
@@ -480,7 +484,9 @@ async def test_discovered_by_dhcp_or_discovery_failed_to_get_device(
     [
         (
             config_entries.SOURCE_DHCP,
-            dhcp.DhcpServiceInfo(ip=IP_ADDRESS, macaddress=MAC_ADDRESS, hostname=LABEL),
+            dhcp.DhcpServiceInfo(
+                ip=IP_ADDRESS, macaddress=DHCP_FORMATTED_MAC, hostname=LABEL
+            ),
         ),
         (
             config_entries.SOURCE_HOMEKIT,