diff --git a/generate-json-files.py b/generate-json-files.py
index fe54ac3587f233ec046f28a8669b5f9803e14aeb..e4e9293db8f57ff96b1ebe848a2dc211356460a3 100644
--- a/generate-json-files.py
+++ b/generate-json-files.py
@@ -59,8 +59,8 @@ def calculate_moving_average(values, all_countries, all_dates):
                 if average_date not in result[country]:
                     result[country][average_date] = {}
                 for key in corona.all_keys:
-                    if average_date in values[country] and key in values[country][average_date]:
-                        value = values[country][average_date][key]
+                    if date in values[country] and key in values[country][date]:
+                        value = values[country][date][key]
                         if key not in result[country][average_date]:
                             result[country][average_date][key] = {"sum": 0, "count": 0} 
                         result[country][average_date][key]["sum"] += value