diff --git a/lib/cycle.js b/lib/cycle.js
index 0f47690..b675f52 100644
--- a/lib/cycle.js
+++ b/lib/cycle.js
@@ -39,7 +39,8 @@ export default function config(opts) {
     const targetDate = LocalDate.parse(targetDateString)
     const lastMensesLocalDate = LocalDate.parse(lastMensesStart.date)
     const diffInDays = lastMensesLocalDate.until(targetDate, DAYS)
-
+    // take maxCycleLength into account (we don't display cycle day numbers higher than 99 at the moment)
+    if (diffInDays >= 99) return null
     // cycle starts at day 1
     return diffInDays + 1
   }