diff --git a/homeassistant/helpers/trigger_template_entity.py b/homeassistant/helpers/trigger_template_entity.py
index fff25568222..24e66a30c45 100644
--- a/homeassistant/helpers/trigger_template_entity.py
+++ b/homeassistant/helpers/trigger_template_entity.py
@@ -23,6 +23,7 @@ from homeassistant.const import (
     CONF_NAME,
     CONF_UNIQUE_ID,
     CONF_UNIT_OF_MEASUREMENT,
+    MAX_LENGTH_STATE_STATE,
 )
 from homeassistant.core import HomeAssistant, State, callback
 from homeassistant.exceptions import TemplateError
@@ -238,10 +239,12 @@ class ManualTriggerEntity(TriggerBaseEntity):
             attr.update(state_attributes)
         if extra_state_attributes := self.extra_state_attributes:
             attr.update(extra_state_attributes)
-
+        entity_state = str(self.state)
+        if len(entity_state) > MAX_LENGTH_STATE_STATE:
+            entity_state = entity_state[:MAX_LENGTH_STATE_STATE]
         state = State(
             self.entity_id,
-            str(value),
+            str(entity_state),
             attr,
             now,
             now,
diff --git a/tests/components/command_line/test_switch.py b/tests/components/command_line/test_switch.py
index 549e729892c..ed8032d7789 100644
--- a/tests/components/command_line/test_switch.py
+++ b/tests/components/command_line/test_switch.py
@@ -564,7 +564,7 @@ async def test_templating(hass: HomeAssistant) -> None:
                             "command_off": f"echo 0 > {path}",
                             "value_template": '{{ value=="1" }}',
                             "icon": (
-                                '{% if states("switch.test2")=="on" %} mdi:on {% else %} mdi:off {% endif %}'
+                                '{% if states("switch.test")=="on" %} mdi:on {% else %} mdi:off {% endif %}'
                             ),
                             "name": "Test2",
                         },