diff --git a/homeassistant/components/matter/select.py b/homeassistant/components/matter/select.py
index d91953610e9..1bba18b2c5b 100644
--- a/homeassistant/components/matter/select.py
+++ b/homeassistant/components/matter/select.py
@@ -105,7 +105,7 @@ class MatterModeSelectEntity(MatterSelectEntity):
         )
         modes = {mode.mode: mode.label for mode in cluster.supportedModes}
         self._attr_options = list(modes.values())
-        self._attr_current_option = modes[cluster.currentMode]
+        self._attr_current_option = modes.get(cluster.currentMode)
         # handle optional Description attribute as descriptive name for the mode
         if desc := getattr(cluster, "description", None):
             self._attr_name = desc
diff --git a/tests/components/matter/test_select.py b/tests/components/matter/test_select.py
index bda2a933d42..27ce6d32c22 100644
--- a/tests/components/matter/test_select.py
+++ b/tests/components/matter/test_select.py
@@ -97,8 +97,8 @@ async def test_attribute_select_entities(
     await trigger_subscription_callback(hass, matter_client)
     state = hass.states.get(entity_id)
     assert state.state == "on"
-    # test that an invalid value (e.g. 255) leads to an unknown state
-    set_node_attribute(light_node, 1, 6, 16387, 255)
+    # test that an invalid value (e.g. 253) leads to an unknown state
+    set_node_attribute(light_node, 1, 6, 16387, 253)
     await trigger_subscription_callback(hass, matter_client)
     state = hass.states.get(entity_id)
     assert state.state == "unknown"