diff --git a/tests/components/knocki/test_config_flow.py b/tests/components/knocki/test_config_flow.py
index 4affbd2a197..a82991094b2 100644
--- a/tests/components/knocki/test_config_flow.py
+++ b/tests/components/knocki/test_config_flow.py
@@ -20,7 +20,7 @@ from tests.common import MockConfigEntry
 DHCP_DISCOVERY = DhcpServiceInfo(
     ip="1.1.1.1",
     hostname="KNC1-W-00000214",
-    macaddress="aa:bb:cc:dd:ee:ff",
+    macaddress="aabbccddeeff",
 )