diff --git a/billing/views.py b/billing/views.py
index 20b944b2..f68ba56b 100644
--- a/billing/views.py
+++ b/billing/views.py
@@ -742,7 +742,7 @@ def graph_yearly_billing(request):
             growth.append(None)
         last_turnover = current_turnover
 
-    if years[-1] == date.today().year:
+    if years and years[-1] == date.today().year:
         growth.pop()  # Don't compute for on-going year.
 
     graph_data.append(["x"] + years)  # X (years) axis
diff --git a/leads/views.py b/leads/views.py
index 4f168081..9a9adddc 100644
--- a/leads/views.py
+++ b/leads/views.py
@@ -511,6 +511,9 @@ def graph_leads_activity(request):
     if subsidiary:
         leads = leads.filter(subsidiary=subsidiary)
 
+    if not leads:
+        return HttpResponse('')
+
     # lead creation rate per week
     first_lead_creation_date = leads.aggregate(Min("creation_date")).get("creation_date__min", datetime.now()).date()
     today = date.today()