diff --git a/lib/esp-knx-ip-async-udp/esp-knx-ip.cpp b/lib/esp-knx-ip-async-udp/esp-knx-ip.cpp
index 7fa575c57..8bdca1edb 100644
--- a/lib/esp-knx-ip-async-udp/esp-knx-ip.cpp
+++ b/lib/esp-knx-ip-async-udp/esp-knx-ip.cpp
@@ -207,46 +207,6 @@ callback_assignment_id_t ESPKNXIP::__callback_register_assignment(address_t addr
   return aid;
 }
 
-void ESPKNXIP::callback_delete_register(callback_id_t id)
-{
-  /*if (id >= registered_callback_assignments)
-    return;
-
-  uint32_t dest_offset = 0;
-  uint32_t src_offset = 0;
-  uint32_t len = 0;
-  if (id == 0)
-  {
-    // start of array, so delete first entry
-    src_offset = 1;
-    // registered_ga_callbacks will be 1 in case of only one entry
-    // registered_ga_callbacks will be 2 in case of two entries, etc..
-    // so only copy anything, if there is it at least more then one element
-    len = (registered_callback_assignments - 1);
-  }
-  else if (id == registered_callback_assignments - 1)
-  {
-    // last element, don't do anything, simply decrement counter
-  }
-  else
-  {
-    // somewhere in the middle
-    // need to calc offsets
-
-    // skip all prev elements
-    dest_offset = id; // id is equal to how many element are in front of it
-    src_offset = dest_offset + 1; // start after the current element
-    len = (registered_callback_assignments - 1 - id);
-  }
-
-  if (len > 0)
-  {
-    memmove(callback_assignments + dest_offset, callback_assignments + src_offset, len * sizeof(callback_assignment_t));
-  }
-
-  registered_callback_assignments--;*/
-}
-
 void ESPKNXIP::callback_delete_assignment(callback_assignment_id_t id)
 {
   __callback_delete_assignment(id);
@@ -313,6 +273,46 @@ callback_id_t ESPKNXIP::callback_register(String name, callback_fptr_t cb, void
   return id;
 }
 
+void ESPKNXIP::callback_delete_register(callback_id_t id)
+{
+  if (id >= registered_callbacks)
+    return;
+
+  uint32_t dest_offset = 0;
+  uint32_t src_offset = 0;
+  uint32_t len = 0;
+  if (id == 0)
+  {
+    // start of array, so delete first entry
+    src_offset = 1;
+    // registered_ga_callbacks will be 1 in case of only one entry
+    // registered_ga_callbacks will be 2 in case of two entries, etc..
+    // so only copy anything, if there is it at least more then one element
+    len = (registered_callbacks - 1);
+  }
+  else if (id == registered_callbacks - 1)
+  {
+    // last element, don't do anything, simply decrement counter
+  }
+  else
+  {
+    // somewhere in the middle
+    // need to calc offsets
+
+    // skip all prev elements
+    dest_offset = id; // id is equal to how many element are in front of it
+    src_offset = dest_offset + 1; // start after the current element
+    len = (registered_callbacks - 1 - id);
+  }
+
+  if (len > 0)
+  {
+    memmove(callbacks + dest_offset, callbacks + src_offset, len * sizeof(callback_t));
+  }
+
+  registered_callbacks--;
+}
+
 void ESPKNXIP::callback_assign(callback_id_t id, address_t val)
 {
   if (id >= registered_callbacks)