diff --git a/tests/components/qnap_qsw/test_config_flow.py b/tests/components/qnap_qsw/test_config_flow.py
index ab35a9369ea..57f6094c850 100644
--- a/tests/components/qnap_qsw/test_config_flow.py
+++ b/tests/components/qnap_qsw/test_config_flow.py
@@ -20,7 +20,7 @@ from tests.common import MockConfigEntry
 DHCP_SERVICE_INFO = dhcp.DhcpServiceInfo(
     hostname="qsw-m408-4c",
     ip="192.168.1.200",
-    macaddress="245EBE000000",
+    macaddress="245ebe000000",
 )
 
 TEST_PASSWORD = "test-password"