diff --git a/util/proto/test/custom/test_frostfs.pb.go b/util/proto/test/custom/test_frostfs.pb.go
index 28a3044..c99234e 100644
--- a/util/proto/test/custom/test_frostfs.pb.go
+++ b/util/proto/test/custom/test_frostfs.pb.go
@@ -18,9 +18,9 @@ import (
 type Primitives_SomeEnum int32
 
 const (
-	Primitives_UNKNOWN  = 0
-	Primitives_POSITIVE = 1
-	Primitives_NEGATIVE = -1
+	Primitives_UNKNOWN  Primitives_SomeEnum = 0
+	Primitives_POSITIVE Primitives_SomeEnum = 1
+	Primitives_NEGATIVE Primitives_SomeEnum = -1
 )
 
 var (