diff --git a/homeassistant/components/trend/config_flow.py b/homeassistant/components/trend/config_flow.py
index f91e81bf4e8..756b9536d19 100644
--- a/homeassistant/components/trend/config_flow.py
+++ b/homeassistant/components/trend/config_flow.py
@@ -34,6 +34,9 @@ async def get_base_options_schema(handler: SchemaCommonFlowHandler) -> vol.Schem
     """Get base options schema."""
     return vol.Schema(
         {
+            vol.Optional(CONF_ENTITY_ID): selector.EntitySelector(
+                selector.EntitySelectorConfig(multiple=False, read_only=True),
+            ),
             vol.Optional(CONF_ATTRIBUTE): selector.AttributeSelector(
                 selector.AttributeSelectorConfig(
                     entity_id=handler.options[CONF_ENTITY_ID]
diff --git a/homeassistant/components/trend/strings.json b/homeassistant/components/trend/strings.json
index fb70a6e7032..9f11673e4cd 100644
--- a/homeassistant/components/trend/strings.json
+++ b/homeassistant/components/trend/strings.json
@@ -18,6 +18,7 @@
       },
       "settings": {
         "data": {
+          "entity_id": "[%key:component::trend::config::step::user::data::entity_id%]",
           "attribute": "Attribute of entity that this sensor tracks",
           "invert": "Invert the result"
         }
@@ -28,6 +29,7 @@
     "step": {
       "init": {
         "data": {
+          "entity_id": "[%key:component::trend::config::step::user::data::entity_id%]",
           "attribute": "[%key:component::trend::config::step::settings::data::attribute%]",
           "invert": "[%key:component::trend::config::step::settings::data::invert%]",
           "max_samples": "Maximum number of stored samples",