diff --git a/scripts/startup_script.sh b/scripts/startup_script.sh
index 559c147..00a6d90 100755
--- a/scripts/startup_script.sh
+++ b/scripts/startup_script.sh
@@ -62,7 +62,7 @@ sed -i -r "s/server.debugLogsEnabled = (.*)/server.debugLogsEnabled = ${DEBUG:-\
 sed -i -r "s/server.gqlDebugLogsEnabled = (.*)/server.gqlDebugLogsEnabled = ${GQL_DEBUG:-\1}/" /home/suwayomi/.local/share/Tachidesk/server.conf
 
 # backup
-sed -i -r "s|server.backupTime = \"(.*)\"|server.backupTime = \"${BACKUP_TIME:-\1}\"|" /home/suwayomi/.local/share/Tachidesk/server.conf
+sed -i -r "s|server.backupTime = \"(.*?)\"|server.backupTime = \"${BACKUP_TIME:-\1}\"|" /home/suwayomi/.local/share/Tachidesk/server.conf
 sed -i -r "s/server.backupInterval = (.*)/server.backupInterval = ${BACKUP_INTERVAL:-\1}/" /home/suwayomi/.local/share/Tachidesk/server.conf
 sed -i -r "s/server.backupTTL = (.*)/server.backupTTL = ${BACKUP_TTL:-\1}/" /home/suwayomi/.local/share/Tachidesk/server.conf