diff --git a/src/Globals.cpp b/src/Globals.cpp
index 02ff5331..4003748f 100644
--- a/src/Globals.cpp
+++ b/src/Globals.cpp
@@ -286,7 +286,7 @@ IPAddress gateway;
 IPAddress subnet;
 IPAddress primaryDNS;
 IPAddress secondaryDNS;
-const char *VERSION = "0.82";
+const char *VERSION = "0.81";
 
 String MQTT_HOST = "";
 uint16_t MQTT_PORT = 1883;
diff --git a/src/PeripheryManager.cpp b/src/PeripheryManager.cpp
index d72f762e..d21ce28a 100644
--- a/src/PeripheryManager.cpp
+++ b/src/PeripheryManager.cpp
@@ -384,9 +384,6 @@ void PeripheryManager_::setup()
     dfmp3.begin();
 #endif
     photocell.setPhotocellPositionOnGround(false);
-
-    ledcSetup(LEDC_CHANNEL, 2000, LEDC_RESOLUTION); // Start mit 2kHz
-    ledcAttachPin(BUZZER_PIN, LEDC_CHANNEL);
 }
 
 void PeripheryManager_::tick()
@@ -476,6 +473,7 @@ long PeripheryManager_::readUptime()
 
 void PeripheryManager_::r2d2(const char *msg)
 {
+#ifdef ULANZI
     for (int i = 0; msg[i] != '\0'; i++)
     {
         char c = msg[i];
@@ -483,4 +481,5 @@ void PeripheryManager_::r2d2(const char *msg)
         delay(baudRate + 10);
     }
     noTone(BUZZER_PIN);
+#endif
 }
\ No newline at end of file