diff --git a/inkycal/tests/inkycal_agenda_test.py b/inkycal/tests/inkycal_agenda_test.py
index 54e8c81..d7353f3 100644
--- a/inkycal/tests/inkycal_agenda_test.py
+++ b/inkycal/tests/inkycal_agenda_test.py
@@ -5,13 +5,18 @@ agenda = Agenda(
   #size
   (400,400),
 
-  # config
+  # common config
   {
+  'language': 'en',
+  'units': 'metric',
+  'hours': 24,
+  # module-specific config
   'week_starts_on': 'Monday',
   'ical_urls': ['https://calendar.google.com/calendar/ical/en.usa%23holiday%40group.v.calendar.google.com/public/basic.ics']
   }
   )
 
+
 class inkycal_agenda_test(unittest.TestCase):
   def test_generate_image(self):
     print('testing image generation')
diff --git a/inkycal/tests/inkycal_calendar_test.py b/inkycal/tests/inkycal_calendar_test.py
index 4a354d2..a7fb273 100644
--- a/inkycal/tests/inkycal_calendar_test.py
+++ b/inkycal/tests/inkycal_calendar_test.py
@@ -5,8 +5,12 @@ calendar = Calendar(
   #size
   (400,400),
 
-  # config
+  # common config
   {
+  'language': 'en',
+  'units': 'metric',
+  'hours': 24,
+  # module-specific config
   'week_starts_on': 'Monday',
   'ical_urls': ['https://calendar.google.com/calendar/ical/en.usa%23holiday%40group.v.calendar.google.com/public/basic.ics']
   }
diff --git a/inkycal/tests/inkycal_rss_test.py b/inkycal/tests/inkycal_rss_test.py
index 53ca1ce..5905fe5 100644
--- a/inkycal/tests/inkycal_rss_test.py
+++ b/inkycal/tests/inkycal_rss_test.py
@@ -5,9 +5,13 @@ rss = RSS(
   #size
   (400,400),
 
-  # config
+  # common onfig
   {
-    'rss_urls': ['http://feeds.bbci.co.uk/news/world/rss.xml#']
+  'language': 'en',
+  'units': 'metric',
+  'hours': 24,
+  # module-specific config
+  'rss_urls': ['http://feeds.bbci.co.uk/news/world/rss.xml#']
   }
 
   )