diff --git a/cisco_wlc_temp.mkp b/cisco_wlc_temp.mkp
index 6c1fff6c79d1e6746dabba11867aefa8e8d5e352..4d4807e2bea9c71f8777ecff0b4dc3ad19429912 100644
Binary files a/cisco_wlc_temp.mkp and b/cisco_wlc_temp.mkp differ
diff --git a/packages/cisco_wlc_temp b/packages/cisco_wlc_temp
index 349a94403b7fd966a6a807a70fd673a3cf8d07bf..6e34fe6063884737b4e968e8dcd3ab7585275329 100644
--- a/packages/cisco_wlc_temp
+++ b/packages/cisco_wlc_temp
@@ -10,4 +10,5 @@
  'title': u'monitor Cisco WLC temperatur sensor',
  'version': '20180805.v.0.0.1',
  'version.min_required': '1.2.8b8',
- 'version.packaged': '1.4.0p35'}
\ No newline at end of file
+ 'version.packaged': '1.6.0p12',
+ 'version.usable_until': None}
\ No newline at end of file
diff --git a/web/plugins/wato/cisco_wlc_temp.py b/web/plugins/wato/cisco_wlc_temp.py
index 7579557dd208e7c400d8eb1163e9b773628f1331..ef71059dd0113546608ccab8454cd07ce9f32b5a 100644
--- a/web/plugins/wato/cisco_wlc_temp.py
+++ b/web/plugins/wato/cisco_wlc_temp.py
@@ -13,8 +13,8 @@ register_check_parameters(
     Tuple(
         title=_('Cisco WLC temperatur sensor thresholds'),
         elements=[
-            Integer(title=_('warning at'), unit=_('° celsius'), default_value=50),
-            Integer(title=_('critical at'), unit=_('° celsius'), default_value=60),
+            Integer(title=_('warning at'), unit=_(u'° celsius'), default_value=50),
+            Integer(title=_('critical at'), unit=_(u'° celsius'), default_value=60),
         ]
     ),
     None,