diff --git a/src/lsp/cobol_parser/recovery.ml b/src/lsp/cobol_parser/recovery.ml
index 475db629..28cd23bc 100644
--- a/src/lsp/cobol_parser/recovery.ml
+++ b/src/lsp/cobol_parser/recovery.ml
@@ -10,6 +10,30 @@
 (* of this source tree.                                                   *)
 (*                                                                        *)
 (**************************************************************************)
+(*                                                                        *)
+(* Copyright (c) 2013-2022 Frédéric Bour, Thomas Refis and                *)
+(*   Simon Castellan.                                                     *)
+(*                                                                        *)
+(* Permission is hereby granted, free of charge, to any person obtaining  *)
+(* a copy of this software and associated documentation files (the        *)
+(* "Software"), to deal in the Software without restriction, including    *)
+(* without limitation the rights to use, copy, modify, merge, publish,    *)
+(* distribute, sublicense, and/or sell copies of the Software, and to     *)
+(* permit persons to whom the Software is furnished to do so, subject to  *)
+(* the following conditions:                                              *)
+(*                                                                        *)
+(* The above copyright notice and this permission notice shall be         *)
+(* included in all copies or substantial portions of the Software.        *)
+(*                                                                        *)
+(* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        *)
+(* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     *)
+(* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND                  *)
+(* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE *)
+(* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION *)
+(* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION  *)
+(* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.        *)
+(*                                                                        *)
+(**************************************************************************)
 
 (* Note that's heavily inspired from merlin's own code for recovery *)