diff --git a/app/src/main/java/org/cutem/cutecalendar/util/CalendarUtil.java b/app/src/main/java/org/cutem/cutecalendar/util/CalendarUtil.java
index c9dd22e..6a7c7a0 100644
--- a/app/src/main/java/org/cutem/cutecalendar/util/CalendarUtil.java
+++ b/app/src/main/java/org/cutem/cutecalendar/util/CalendarUtil.java
@@ -27,7 +27,7 @@ public class CalendarUtil {
     public static int[] splitCalendar(@NotNull Calendar calendar) {
         int[] result = new int[7];
         result[0] = calendar.get(Calendar.YEAR);
-        result[1] = calendar.get(Calendar.MONTH);
+        result[1] = calendar.get(Calendar.MONTH) + 1;
         result[2] = calendar.get(Calendar.DAY_OF_MONTH);
         result[3] = calendar.get(Calendar.HOUR_OF_DAY);
         result[4] = calendar.get(Calendar.MINUTE);