diff --git a/proto/collections/collections.proto b/proto/collections/collections.proto
index 4c17d0d95fc7d2174d6a7351f31532eb4065c051..c182a944d666f00e4cd8588cd100d421f007a8b3 100644
--- a/proto/collections/collections.proto
+++ b/proto/collections/collections.proto
@@ -3,7 +3,6 @@ syntax = "proto3";
 import "google/protobuf/empty.proto";
 import "common/common.proto";
 import "google/protobuf/timestamp.proto";
-import "google/protobuf/duration.proto";
 
 option go_package = "git.perx.ru/perxis/perxis-go/proto/collections;collections";
 
@@ -26,7 +25,6 @@ message Collection {
   optional bool no_data = 12;
   string schema = 7;
   bool hidden = 13;
-  google.protobuf.Duration ttl = 14;
 
   message View {
     string space_id = 1;