diff --git a/checks/check_snmp_synology.py b/checks/check_snmp_synology.py
index 2caf02c..3539835 100755
--- a/checks/check_snmp_synology.py
+++ b/checks/check_snmp_synology.py
@@ -8,7 +8,7 @@
     - https://easysnmp.readthedocs.io/en/latest/session_api.html
 """
 
-__version__     = '0.13.0'
+__version__     = '0.13.1'
 __author__      = 'anima'
 
 # imports
@@ -643,7 +643,7 @@ class SNMPSynologyUPSResource(nagiosplugin.Resource):
             nagiosplugin.Metric: single metric element (return)
         """
         baseoid = '1.3.6.1.4.1.6574.4'
-        data = self.session.walk(baseoid)
+        # data = self.session.walk(baseoid)
         # not sure if this value time remaining ...
         time_until_empty = self.session.get(baseoid + '.3.6.1.0').value
         # not shure what (for my ups) satus 'OL' says, maybe "online" ?