diff --git a/common/script/preenUserHistory.js b/common/script/preenUserHistory.js
index babec300be..507b24c88b 100644
--- a/common/script/preenUserHistory.js
+++ b/common/script/preenUserHistory.js
@@ -50,7 +50,7 @@ export function preenHistory (history, isSubscribed, timezoneOffset) {
     return date.isSame(monthsCutOff) || date.isAfter(monthsCutOff);
   });
   // Aggregate remaining entries by month and year
-  if (history.length > 0) newHistory.unshift(..._aggregate(aggregateByMonth, 'YYYYMM'));
+  if (aggregateByMonth.length > 0) newHistory.unshift(..._aggregate(aggregateByMonth, 'YYYYMM'));
   if (history.length > 0) newHistory.unshift(..._aggregate(history, 'YYYY'));
 
   return newHistory;