diff --git a/bin/tests/system/autosign/ns3/nozsk.example.db.in b/bin/tests/system/autosign/ns3/nozsk.example.db.in
index 1376922f0a..5d244c3fc6 100644
--- a/bin/tests/system/autosign/ns3/nozsk.example.db.in
+++ b/bin/tests/system/autosign/ns3/nozsk.example.db.in
@@ -9,7 +9,7 @@
 ; See the COPYRIGHT file distributed with this work for additional
 ; information regarding copyright ownership.
 
-$TTL 300	; 5 minutes
+$TTL 3600	; 1 hour
 @			IN SOA	mname1. . (
 				1          ; serial
 				20         ; refresh (20 seconds)