diff --git a/src/AsyncWebSynchronization.h b/src/AsyncWebSynchronization.h
index f36c52dcf..b852c4719 100644
--- a/src/AsyncWebSynchronization.h
+++ b/src/AsyncWebSynchronization.h
@@ -26,11 +26,11 @@ class AsyncWebLock
   }
 
   bool lock() const {
-    extern void *pxCurrentTCB;
-    if (_lockedBy != pxCurrentTCB) {
-      xSemaphoreTake(_lock, portMAX_DELAY);
-      _lockedBy = pxCurrentTCB;
-      return true;
+    TaskHandle_t currentTask = xTaskGetCurrentTaskHandle();
+    if (_lockedBy != currentTask) {
+        xSemaphoreTake(_lock, portMAX_DELAY);
+        _lockedBy = currentTask;
+        return true;
     }
     return false;
   }
@@ -84,4 +84,4 @@ class AsyncWebLockGuard
   }
 };
 
-#endif // ASYNCWEBSYNCHRONIZATION_H_
\ No newline at end of file
+#endif // ASYNCWEBSYNCHRONIZATION_H_