diff --git a/README.rst b/README.rst
index a7e0b72..6a003ea 100644
--- a/README.rst
+++ b/README.rst
@@ -84,7 +84,7 @@
       incr_before_full: 3
       backup_dir: /var/backups/mysql/xtrabackup
       backup_times:
-        dayOfWeek: 0
+        day_of_week: 0
         hour: 4
         minute: 52
       compression: true
@@ -101,7 +101,7 @@
   ``backup_times`` parameters is not defined, the defalut ``*`` value will be
   used. For example, if minute parameter is ``*``, it will run the backup every minute,
   which is ususally not desired.
-  Available parameters are ``dayOfWeek``, ``dayOfMonth``, ``month``, ``hour`` and ``minute``.
+  Available parameters are ``day_of_week``, ``day_of_month``, ``month``, ``hour`` and ``minute``.
   Please see the crontab reference for further info on how to set these parameters.
 
   .. note:: Please be aware that only ``backup_times`` section OR
@@ -154,7 +154,7 @@
       incr_before_full: 3
       backup_dir: /srv/backup
       backup_times:
-        dayOfWeek: 0
+        day_of_week: 0
         hour: 4
         minute: 52
       key:
diff --git a/tests/pillar/client_backup_times.sls b/tests/pillar/client_backup_times.sls
index 2e83129..e4cd6b0 100644
--- a/tests/pillar/client_backup_times.sls
+++ b/tests/pillar/client_backup_times.sls
@@ -5,9 +5,9 @@
     incr_before_full: 3
     backup_dir: /var/backups/mysql/xtrabackup
     backup_times:
-      dayOfWeek: 0
+      day_of_week: 0
 #     month: *
-#     dayOfMonth: *
+#     day_of_month: *
       hour: 4
       minute: 52
     compression: true
diff --git a/tests/pillar/server_backup_times.sls b/tests/pillar/server_backup_times.sls
index 44a141b..e593291 100644
--- a/tests/pillar/server_backup_times.sls
+++ b/tests/pillar/server_backup_times.sls
@@ -5,9 +5,9 @@
     incr_before_full: 3
     backup_dir: /srv/backup
     backup_times:
-      dayOfWeek: 0
+      day_of_week: 0
 #     month: *
-#     dayOfMonth: *
+#     day_of_month: *
       hour: 4
       minute: 52
     key:
diff --git a/xtrabackup/client.sls b/xtrabackup/client.sls
index cc7f492..61a75fa 100644
--- a/xtrabackup/client.sls
+++ b/xtrabackup/client.sls
@@ -35,14 +35,14 @@
   - name: /usr/local/bin/innobackupex-runner.sh
   - user: root
 {%- if client.backup_times is defined %}
-{%- if client.backup_times.dayOfWeek is defined %}
-  - dayweek: {{ client.backup_times.dayOfWeek }}
+{%- if client.backup_times.day_of_week is defined %}
+  - dayweek: {{ client.backup_times.day_of_week }}
 {%- endif -%}
 {%- if client.backup_times.month is defined %}
   - month: {{ client.backup_times.month }}
 {%- endif %}
-{%- if client.backup_times.dayOfMonth is defined %}
-  - daymonth: {{ client.backup_times.dayOfMonth }}
+{%- if client.backup_times.day_of_month is defined %}
+  - daymonth: {{ client.backup_times.day_of_month }}
 {%- endif %}
 {%- if client.backup_times.hour is defined %}
   - hour: {{ client.backup_times.hour }}