diff --git a/main/zh_espnow_sensor.h b/main/zh_espnow_sensor.h
index 0f4762b..2825c09 100644
--- a/main/zh_espnow_sensor.h
+++ b/main/zh_espnow_sensor.h
@@ -54,15 +54,15 @@
 
 typedef struct // Structure of data exchange between tasks, functions and event handlers.
 {
-    struct
+    struct // Storage structure of sensor hardware configuration data.
     {
-        ha_sensor_type_t sensor_type;        // Sensor types.
-        uint8_t sensor_pin_1;                // Sensor GPIO number 1. @note Main pin for 1-wire sensors, SDA pin for I2C sensors.
-        uint8_t sensor_pin_2;                // Sensor GPIO number 2. @note SCL pin for I2C sensors.
-        uint8_t power_pin;                   // Power GPIO number (if used sensor power control).
-        uint16_t measurement_frequency;      // Measurement frequency (sleep time on battery powering).
-        bool battery_power;                  // Battery powered. @note Battery powering (true) / external powering (false).
-    } hardware_config;                       // Storage structure of sensor hardware configuration data.
+        ha_sensor_type_t sensor_type;   // Sensor types.
+        uint8_t sensor_pin_1;           // Sensor GPIO number 1. @note Main pin for 1-wire sensors, SDA pin for I2C sensors.
+        uint8_t sensor_pin_2;           // Sensor GPIO number 2. @note SCL pin for I2C sensors.
+        uint8_t power_pin;              // Power GPIO number (if used sensor power control).
+        uint16_t measurement_frequency; // Measurement frequency (sleep time on battery powering).
+        bool battery_power;             // Battery powered. @note Battery powering (true) / external powering (false).
+    } hardware_config;
     volatile bool gateway_is_available;      // Gateway availability status flag. @note Used to control the tasks when the gateway connection is established / lost. Used only when external powered.
     uint8_t gateway_mac[6];                  // Gateway MAC address. @note Used only when external powered.
     uint8_t sent_message_quantity;           // System counter for the number of sended messages. @note Used only when powered by battery.