diff --git a/conf/fail2ban/filter.d/miab-owncloud.conf b/conf/fail2ban/filter.d/miab-owncloud.conf
index a9a13f2c..709f8bac 100644
--- a/conf/fail2ban/filter.d/miab-owncloud.conf
+++ b/conf/fail2ban/filter.d/miab-owncloud.conf
@@ -3,5 +3,6 @@
 before = common.conf
 
 [Definition]
+datepattern = %%Y-%%m-%%d %%H:%%M:%%S
 failregex=Login failed: .*Remote IP: '<HOST>[\)']
 ignoreregex =