diff --git a/lib/esp-knx-ip-0.5.2/esp-knx-ip.h b/lib/esp-knx-ip-0.5.2/esp-knx-ip.h
index ea711825f..7150706bb 100644
--- a/lib/esp-knx-ip-0.5.2/esp-knx-ip.h
+++ b/lib/esp-knx-ip-0.5.2/esp-knx-ip.h
@@ -398,7 +398,7 @@ typedef struct __callback_assignment
 } callback_assignment_t;
 
 // FastPrecisePowf from tasmota/support_float.ino
-extern float FastPrecisePowf(const float x, const float y);
+//extern float FastPrecisePowf(const float x, const float y);
 
 class ESPKNXIP {
   public:
@@ -567,7 +567,7 @@ class ESPKNXIP {
     callback_assignment_id_t __callback_register_assignment(address_t address, callback_id_t id);
     void __callback_delete_assignment(callback_assignment_id_t id);
 
-    static inline float pow(float a, float b) { return FastPrecisePowf(a, b); }
+    //static inline float pow(float a, float b) { return FastPrecisePowf(a, b); }
 
     ESP8266WebServer *server;
     address_t physaddr;