diff --git a/handlers/util.go b/handlers/util.go
index 0a9ab6c..11eea04 100644
--- a/handlers/util.go
+++ b/handlers/util.go
@@ -30,7 +30,7 @@ type epochDurations struct {
 }
 
 const (
-	SystemAttributePrefix = "__NEOFS__"
+	SystemAttributePrefix = "__SYSTEM__"
 
 	ExpirationDurationAttr  = SystemAttributePrefix + "EXPIRATION_DURATION"
 	ExpirationTimestampAttr = SystemAttributePrefix + "EXPIRATION_TIMESTAMP"