diff --git a/nummi/history/utils.py b/nummi/history/utils.py
index 282d354..b15e792 100644
--- a/nummi/history/utils.py
+++ b/nummi/history/utils.py
@@ -32,7 +32,7 @@ def history(transaction_set):
             "d": [
                 _history.filter(month=datetime.date(y, m + 1, 1)).first()
                 for m in range(
-                    _first_month.month if _first_month.year == y else 0,
+                    _first_month.month - 1 if _first_month.year == y else 0,
                     _last_month.month if _last_month.year == y else 12,
                 )
             ],
@@ -45,7 +45,7 @@ def history(transaction_set):
 
     return {
         "years": _data,
-        "offset": [range(_first_month.month), range(12 - _last_month.month)],
+        "offset": [range(_first_month.month - 1), range(12 - _last_month.month)],
         "max": max(
             _history.aggregate(
                 max=Max("sum_p", default=0),