diff --git a/app/build.gradle b/app/build.gradle
index 7f71d6647..975290abe 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -57,7 +57,7 @@ android {
 }
 
 dependencies {
-    implementation 'com.simplemobiletools:commons:5.10.13'
+    implementation 'com.simplemobiletools:commons:5.10.15'
     implementation 'joda-time:joda-time:2.10.1'
     implementation 'androidx.multidex:multidex:2.0.1'
     implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha3'
diff --git a/app/src/main/kotlin/com/simplemobiletools/calendar/pro/helpers/CalDAVHelper.kt b/app/src/main/kotlin/com/simplemobiletools/calendar/pro/helpers/CalDAVHelper.kt
index 304e536da..058249827 100644
--- a/app/src/main/kotlin/com/simplemobiletools/calendar/pro/helpers/CalDAVHelper.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/calendar/pro/helpers/CalDAVHelper.kt
@@ -513,8 +513,8 @@ class CalDAVHelper(val context: Context) {
             cursor = context.contentResolver.query(uri, projection, selection, null, null)
             if (cursor?.moveToFirst() == true) {
                 do {
-                    val name = cursor.getStringValue(CalendarContract.Attendees.ATTENDEE_NAME)
-                    val email = cursor.getStringValue(CalendarContract.Attendees.ATTENDEE_EMAIL)
+                    val name = cursor.getStringValue(CalendarContract.Attendees.ATTENDEE_NAME) ?: ""
+                    val email = cursor.getStringValue(CalendarContract.Attendees.ATTENDEE_EMAIL) ?: ""
                     val status = cursor.getIntValue(CalendarContract.Attendees.ATTENDEE_STATUS)
                     val relationship = cursor.getIntValue(CalendarContract.Attendees.ATTENDEE_RELATIONSHIP)
                     val attendee = Attendee(0, name, email, status, "", false, relationship)