diff --git a/src/btstack_defines.h b/src/btstack_defines.h
index 0708afdd5..cc28254b3 100644
--- a/src/btstack_defines.h
+++ b/src/btstack_defines.h
@@ -1321,7 +1321,7 @@ typedef uint8_t sm_key_t[16];
  * @brief Proactive Authentication for bonded devices complete. Possible status values:
  *         ERROR_CODE_SUCCESS                           -> connection secure
  *         ERROR_CODE_CONNECTION_TIMEOUT                -> timeout
- *         ERROR_CODE_AUTHENTICATION_FAILURE            -> remote did not provide LTK locally
+ *         ERROR_CODE_PIN_OR_KEY_MISSING                -> remote did not provide (as Peripheral) or use LTK (as Central)
  * @format H1B1
  * @param handle
  * @param addr_type