diff --git a/tests/components/insteon/test_config_flow.py b/tests/components/insteon/test_config_flow.py
index 106c93071be..aec60d45961 100644
--- a/tests/components/insteon/test_config_flow.py
+++ b/tests/components/insteon/test_config_flow.py
@@ -229,7 +229,7 @@ async def test_form_select_hub_v2(hass: HomeAssistant) -> None:
 
 async def test_form_discovery_dhcp(hass: HomeAssistant) -> None:
     """Test the discovery of the Hub via DHCP."""
-    discovery_info = dhcp.DhcpServiceInfo("1.2.3.4", "", "aa:bb:cc:dd:ee:ff")
+    discovery_info = dhcp.DhcpServiceInfo("1.2.3.4", "", "aabbccddeeff")
     result = await hass.config_entries.flow.async_init(
         DOMAIN, context={"source": config_entries.SOURCE_DHCP}, data=discovery_info
     )