diff --git a/nummi/main/utils.py b/nummi/main/utils.py
index f034df6..cbb3d7a 100644
--- a/nummi/main/utils.py
+++ b/nummi/main/utils.py
@@ -20,6 +20,8 @@ class GenerateMonth(Func):
 
 
 def history(transaction_set):
+    if not transaction_set.exists():
+        return None
     _transaction_month = transaction_set.values(month=TruncMonth("date")).order_by(
         "-date"
     )