diff --git a/node-daemon/pvc-flush.service b/node-daemon/pvc-flush.service
index 8c59311f..5ae4d1ff 100644
--- a/node-daemon/pvc-flush.service
+++ b/node-daemon/pvc-flush.service
@@ -11,7 +11,7 @@ Type = oneshot
 RemainAfterExit = true
 WorkingDirectory = /usr/share/pvc
 TimeoutSec = 30min
-ExecStartPre = /bin/sleep 15
+ExecStartPre = /bin/sleep 30
 ExecStart = /usr/bin/pvc -c local node unflush --wait
 ExecStop = /usr/bin/pvc -c local node flush --wait
 ExecStopPost = /bin/sleep 5