diff --git a/index.js b/index.js
index 0a7dcce..f11fb56 100644
--- a/index.js
+++ b/index.js
@@ -104,6 +104,7 @@ function updateRecords(callStats, records) {
     records.totalCallsEverPlaced = callStats.totalCallsEverPlaced;
 
     // Update monthly totals
+    if (!records.monthlyTotals) records.monthlyTotals = {};
     records.monthlyTotals[yesterday.getFullYear().toString()][yesterday.getMonth().toString()] = callStats.totalCallsThisMonth;
 
     if (isNewRecord) {