diff --git a/tests/components/kostal_plenticore/test_config_flow.py b/tests/components/kostal_plenticore/test_config_flow.py
index 3c64a48c218..29695f57db6 100644
--- a/tests/components/kostal_plenticore/test_config_flow.py
+++ b/tests/components/kostal_plenticore/test_config_flow.py
@@ -25,12 +25,15 @@ async def test_formx(hass: HomeAssistant) -> None:
     ) as mock_api_class, patch(
         "homeassistant.components.kostal_plenticore.async_setup_entry",
         return_value=True,
-    ) as mock_setup_entry:
+    ) as mock_setup_entry, patch(
+        "homeassistant.components.kostal_plenticore.config_flow.get_hostname_id",
+        return_value="Network:Hostname",
+    ):
         # mock of the context manager instance
         mock_api_ctx = MagicMock()
         mock_api_ctx.login = AsyncMock()
         mock_api_ctx.get_setting_values = AsyncMock(
-            return_value={"scb:network": {"Hostname": "scb"}}
+            return_value={"scb:network": {"Network:Hostname": "scb"}}
         )
 
         # mock of the return instance of ApiClient
diff --git a/tests/components/kostal_plenticore/test_number.py b/tests/components/kostal_plenticore/test_number.py
index beabd8fe669..7eca20d6f0f 100644
--- a/tests/components/kostal_plenticore/test_number.py
+++ b/tests/components/kostal_plenticore/test_number.py
@@ -62,7 +62,20 @@ def mock_get_setting_values(mock_plenticore_client: ApiClient) -> list:
                     "id": "Battery:MinHomeComsumption",
                 }
             ),
-        ]
+        ],
+        "scb:network": [
+            SettingsData(
+                {
+                    "id": "Network:Hostname",
+                    "unit": None,
+                    "type": "string",
+                    "min": "1",
+                    "max": "78",
+                    "default": None,
+                    "access": "readwrite",
+                }
+            ),
+        ],
     }
 
     # this values are always retrieved by the integration on startup
@@ -75,7 +88,7 @@ def mock_get_setting_values(mock_plenticore_client: ApiClient) -> list:
                 "Properties:VersionIOC": "01.45",
                 "Properties:VersionMC": " 01.46",
             },
-            "scb:network": {"Hostname": "scb"},
+            "scb:network": {"Network:Hostname": "scb"},
         }
     ]