diff --git a/WLAN_Thermometer.ino b/WLAN_Thermometer.ino
index 49dd56a..8c8e040 100644
--- a/WLAN_Thermometer.ino
+++ b/WLAN_Thermometer.ino
@@ -36,6 +36,7 @@
 #define FIRST_MIN_MAX         300000  // = 5 min
 #define HTML_RELOAD_PAGE_SECS 30
 #define WDT_TIMEOUT           300
+#define RESET_AFTER_DAYS      7
 
 LiquidCrystal_I2C lcd(LCD_I2C_ADDR, LCD_COL, LCD_ROW);
 looper sched;
@@ -438,6 +439,15 @@ void show_time(void)
   lcd.setCursor(12, 0);
   lcd.print(time_string);
 
+  if (uptime::getDays() >= RESET_AFTER_DAYS)
+  {
+    lcd.clear();
+    lcd.print("Automatic restart");
+    DEBUG_MSG("Automatic restart\n");
+    delay(2000);
+    ESP.restart();
+  }
+
   digitalWrite(ONBOARD_LED, led_state);
   led_state = !led_state;
 }