diff --git a/db/update0005.sql b/db/update0005.sql
--- a/db/update0005.sql
+++ b/db/update0005.sql
@@ -1,1 +1,2 @@
-ALTER TABLE calendars ADD disabled integer 0;
+ALTER TABLE calendars ADD disabled integer;
+UPDATE calendars SET disabled = 0;
diff --git a/plugin.info.txt b/plugin.info.txt
--- a/plugin.info.txt
+++ b/plugin.info.txt
@@ -1,7 +1,7 @@
 base	davcal
 author  Andreas Boehler
 email   dev@aboehler.at
-date    2016-09-12
+date    2016-09-13
 name    Calendar PlugIn with CalDAV sharing support
 desc    Create one calendar per page and share/subscribe via CalDAV
 url     http://www.dokuwiki.org/plugin:davcal