diff --git a/app/src/main/kotlin/com/simplemobiletools/calendar/pro/helpers/Parser.kt b/app/src/main/kotlin/com/simplemobiletools/calendar/pro/helpers/Parser.kt
index 81e480568..b9420dac7 100644
--- a/app/src/main/kotlin/com/simplemobiletools/calendar/pro/helpers/Parser.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/calendar/pro/helpers/Parser.kt
@@ -60,8 +60,10 @@ class Parser {
                 } else if (repeatInterval.isXMonthlyRepetition() || repeatInterval.isXYearlyRepetition()) {
                     repeatRule = if (value.startsWith("-1")) REPEAT_ORDER_WEEKDAY_USE_LAST else REPEAT_ORDER_WEEKDAY
                 }
-            } else if (key == BYMONTHDAY && value.toInt() == -1) {
-                repeatRule = REPEAT_LAST_DAY
+            } else if (key == BYMONTHDAY) {
+                if (value.split(",").any { it.toInt() == -1 }) {
+                    repeatRule = REPEAT_LAST_DAY
+                }
             }
         }
         return EventRepetition(repeatInterval, repeatRule, repeatLimit)