diff --git a/android/src/main/java/com/timesafari/dailynotification/DailyNotificationScheduler.java b/android/src/main/java/com/timesafari/dailynotification/DailyNotificationScheduler.java
index 3bc9c46..af7f2a4 100644
--- a/android/src/main/java/com/timesafari/dailynotification/DailyNotificationScheduler.java
+++ b/android/src/main/java/com/timesafari/dailynotification/DailyNotificationScheduler.java
@@ -587,10 +587,13 @@ public class DailyNotificationScheduler {
     public boolean isScheduled(String scheduleId, Long triggerAtMillis) {
         try {
             // Delegate to NotifyReceiver which checks actual AlarmManager state
-            return com.timesafari.dailynotification.NotifyReceiver.isAlarmScheduled(
+            // Note: NotifyReceiver.isAlarmScheduled is a Kotlin companion object function with default parameters
+            // From Java, we need to use Companion and provide explicit values (null is acceptable for optional params)
+            // Kotlin Long? maps to java.lang.Long in Java
+            return com.timesafari.dailynotification.NotifyReceiver.Companion.isAlarmScheduled(
                 context,
-                scheduleId != null ? scheduleId : null,
-                triggerAtMillis != null ? triggerAtMillis : null
+                scheduleId,
+                triggerAtMillis
             );
         } catch (Exception e) {
             Log.e(TAG, "Error checking alarm schedule status", e);
@@ -618,7 +621,9 @@ public class DailyNotificationScheduler {
     public Long getNextAlarmTime() {
         try {
             // Delegate to NotifyReceiver which checks actual AlarmManager state
-            return com.timesafari.dailynotification.NotifyReceiver.getNextAlarmTime(context);
+            // Note: NotifyReceiver.getNextAlarmTime is a Kotlin companion object function
+            // Kotlin Long? maps to java.lang.Long in Java
+            return com.timesafari.dailynotification.NotifyReceiver.Companion.getNextAlarmTime(context);
         } catch (Exception e) {
             Log.e(TAG, "Error getting next alarm time", e);
             return null;