1 files changed, 1 insertions, 1 deletions

diff --git a/worktime.py b/worktime.py
index 639d09c..1cc648a 100755
--- a/worktime.py
+++ b/worktime.py
@@ -51,7 +51,7 @@ class TogglAPI(object):
     def get_billable_hours(self, start_date, end_date=datetime.now(timezone.utc), rounding=False):
         url = self._make_url(api = TogglAPISection.REPORTS, section = ['summary'], params={'since': start_date.astimezone(timezone.utc).isoformat(), 'until': end_date.astimezone(timezone.utc).isoformat(), 'rounding': rounding})
         r = self._query(url = url, method='GET')
-        return timedelta(milliseconds=r.json()['total_billable'])
+        return timedelta(milliseconds=r.json()['total_billable']) if r.json()['total_billable'] else timedelta(milliseconds=0)
 
     def get_running_clock(self, now=datetime.now(timezone.utc)):
         url = self._make_url(api = TogglAPISection.TOGGL, section = ['time_entries', 'current'])