diff --git a/casadm/extended_err_msg.c b/casadm/extended_err_msg.c
index a7e6a7d..9d3b4fe 100644
--- a/casadm/extended_err_msg.c
+++ b/casadm/extended_err_msg.c
@@ -53,6 +53,10 @@ struct {
 		OCF_ERR_CACHE_NOT_EXIST,
 		"Cache ID does not exist"
 	},
+	{
+		OCF_ERR_CORE_NOT_EXIST,
+		"Core ID does not exist"
+	},
 	{
 		OCF_ERR_CACHE_EXIST,
 		"Cache ID already exists"