diff --git a/db/routines/vn/procedures/collection_assign.sql b/db/routines/vn/procedures/collection_assign.sql
index 6d31fbc8f..49b4eb7bb 100644
--- a/db/routines/vn/procedures/collection_assign.sql
+++ b/db/routines/vn/procedures/collection_assign.sql
@@ -1,8 +1,8 @@
-DELIMITER $$
+DELIMITER $$
 CREATE OR REPLACE DEFINER=`root`@`localhost` PROCEDURE `vn`.`collection_assign`(
 	vUserFk INT,
 	OUT vCollectionFk INT
-)
+)
 proc:BEGIN   
 /**
  * Comprueba si existen colecciones libres que se ajustan
@@ -15,6 +15,13 @@ proc:BEGIN
 	DECLARE vHasTooMuchCollections BOOL;
 	DECLARE vLockTime INT DEFAULT 15;
 
+	DECLARE EXIT HANDLER FOR SQLEXCEPTION
+	BEGIN
+		DO RELEASE_LOCK('collection_assign');
+		
+		RESIGNAL;
+	END;
+
 	-- Si hay colecciones sin terminar, sale del proceso
 	CALL collection_get(vUserFk);
 
@@ -84,5 +91,5 @@ proc:BEGIN
 		WHERE id = vCollectionFk;
 
 	DO RELEASE_LOCK('collection_assign');
-END$$
-DELIMITER ;
+END$$
+DELIMITER ;