diff --git a/dnsapi/dns_ispconfig.sh b/dnsapi/dns_ispconfig.sh
index 8fb8b657..50a80880 100755
--- a/dnsapi/dns_ispconfig.sh
+++ b/dnsapi/dns_ispconfig.sh
@@ -93,8 +93,8 @@ _ISPC_getZoneInfo() {
       '' | *[!0-9]*) _err "Client ID is not numeric." ;;
       *) _info "Successfully retrieved Client ID" ;;
     esac
-      unset zoneFound
-      unset zoneEnd
+    unset zoneFound
+    unset zoneEnd
   fi
 }