diff --git a/accounting/views.py b/accounting/views.py
index 6daf014..9dd17bc 100644
--- a/accounting/views.py
+++ b/accounting/views.py
@@ -29,7 +29,7 @@ from django.views import generic
 from django.views.decorators.http import require_GET
 
 from accounting.models import Record
-from accounting.utils import PeriodParser
+from mia_core.period import PeriodParser
 from mia import settings
 from mia_core.digest_auth import digest_login_required
 from mia_core.utils import UrlBuilder, Pagination, \
diff --git a/accounting/utils.py b/mia_core/period.py
similarity index 97%
rename from accounting/utils.py
rename to mia_core/period.py
index ef7d837..e336943 100644
--- a/accounting/utils.py
+++ b/mia_core/period.py
@@ -15,16 +15,17 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 
-"""The utilities of the accounting application.
+"""The utilities of the period chooser of the Mia core application.
 
 """
+
 import re
-from datetime import date
+from datetime import date, timedelta
 
 from django.template import defaultfilters
 from django.utils import dateformat
-from django.utils.timezone import localdate, timedelta
-from django.utils.translation import pgettext, gettext
+from django.utils.timezone import localdate
+from django.utils.translation import gettext, pgettext
 
 
 class PeriodParser:
@@ -222,4 +223,4 @@ class PeriodParser:
         prev = date(prev_year, prev_month, 1)
         if year == prev.year and month == prev.month:
             return gettext("Last Month")
-        return "%d/%d" % (year, month)
+        return "%d/%d" % (year, month)
\ No newline at end of file