diff --git a/tests/components/lamarzocco/conftest.py b/tests/components/lamarzocco/conftest.py
index ccfea1243bc..ad1378a6dc1 100644
--- a/tests/components/lamarzocco/conftest.py
+++ b/tests/components/lamarzocco/conftest.py
@@ -34,7 +34,7 @@ def mock_config_entry(
         version=3,
         data=USER_INPUT
         | {
-            CONF_ADDRESS: "00:00:00:00:00:00",
+            CONF_ADDRESS: "000000000000",
             CONF_TOKEN: "token",
         },
         unique_id=mock_lamarzocco.serial_number,
diff --git a/tests/components/lamarzocco/test_config_flow.py b/tests/components/lamarzocco/test_config_flow.py
index 38cdc10d8ab..e50707f71af 100644
--- a/tests/components/lamarzocco/test_config_flow.py
+++ b/tests/components/lamarzocco/test_config_flow.py
@@ -422,7 +422,7 @@ async def test_dhcp_discovery(
         data=DhcpServiceInfo(
             ip="192.168.1.42",
             hostname=mock_lamarzocco.serial_number,
-            macaddress="aa:bb:cc:dd:ee:ff",
+            macaddress="aabbccddeeff",
         ),
     )
 
@@ -436,7 +436,7 @@ async def test_dhcp_discovery(
     assert result["type"] is FlowResultType.CREATE_ENTRY
     assert result["data"] == {
         **USER_INPUT,
-        CONF_ADDRESS: "aa:bb:cc:dd:ee:ff",
+        CONF_ADDRESS: "aabbccddeeff",
         CONF_TOKEN: None,
     }
 
@@ -453,7 +453,7 @@ async def test_dhcp_discovery_abort_on_hostname_changed(
         data=DhcpServiceInfo(
             ip="192.168.1.42",
             hostname="custom_name",
-            macaddress="00:00:00:00:00:00",
+            macaddress="000000000000",
         ),
     )
     assert result["type"] is FlowResultType.ABORT
@@ -475,14 +475,14 @@ async def test_dhcp_already_configured_and_update(
         data=DhcpServiceInfo(
             ip="192.168.1.42",
             hostname=mock_lamarzocco.serial_number,
-            macaddress="aa:bb:cc:dd:ee:ff",
+            macaddress="aabbccddeeff",
         ),
     )
     assert result["type"] is FlowResultType.ABORT
     assert result["reason"] == "already_configured"
 
     assert mock_config_entry.data[CONF_ADDRESS] != old_address
-    assert mock_config_entry.data[CONF_ADDRESS] == "aa:bb:cc:dd:ee:ff"
+    assert mock_config_entry.data[CONF_ADDRESS] == "aabbccddeeff"
 
 
 async def test_options_flow(