diff --git a/esphome/components/text_sensor/text_sensor.h b/esphome/components/text_sensor/text_sensor.h
index dc5c33942f..919bf81c8c 100644
--- a/esphome/components/text_sensor/text_sensor.h
+++ b/esphome/components/text_sensor/text_sensor.h
@@ -65,7 +65,7 @@ class TextSensor : public EntityBase, public EntityBase_DeviceClass {
   void internal_send_state_to_frontend(const std::string &state);
 
  protected:
-  LazyCallbackManager<void(std::string)> raw_callback_;  ///< Storage for raw state callbacks.
+  LazyCallbackManager<void(const std::string &)> raw_callback_;  ///< Storage for raw state callbacks.
   LazyCallbackManager<void(const std::string &)> callback_;      ///< Storage for filtered state callbacks.
 
   Filter *filter_list_{nullptr};  ///< Store all active filters.