diff --git a/ble/blecommon.h b/ble/blecommon.h
index caea0a4..16fdec0 100644
--- a/ble/blecommon.h
+++ b/ble/blecommon.h
@@ -63,6 +63,7 @@ enum ble_error_t {
     BLE_ERROR_INITIALIZATION_INCOMPLETE = 9,
     BLE_ERROR_ALREADY_INITIALIZED       = 10,
     BLE_ERROR_UNSPECIFIED               = 11, /**< Unknown error. */
+    BLE_ERROR_INTERNAL_STACK_FAILURE    = 12, /**< The platform-specific stack failed */
 };
 
 /** @brief Default MTU size. */