diff --git a/app/src/main/java/dummydomain/yetanothercallblocker/data/CallLogHelper.java b/app/src/main/java/dummydomain/yetanothercallblocker/data/CallLogHelper.java
index a3ad8b2..555ad29 100644
--- a/app/src/main/java/dummydomain/yetanothercallblocker/data/CallLogHelper.java
+++ b/app/src/main/java/dummydomain/yetanothercallblocker/data/CallLogHelper.java
@@ -60,11 +60,11 @@ public class CallLogHelper {
         try (Cursor cursor = context.getContentResolver()
                 .query(uri, QUERY_PROJECTION, selection, selectionArgs, sortOrder)) {
             if (cursor != null) {
-                int idIndex = cursor.getColumnIndex(CallLog.Calls._ID);
-                int typeIndex = cursor.getColumnIndex(CallLog.Calls.TYPE);
-                int numberIndex = cursor.getColumnIndex(CallLog.Calls.NUMBER);
-                int dateIndex = cursor.getColumnIndex(CallLog.Calls.DATE);
-                int durationIndex = cursor.getColumnIndex(CallLog.Calls.DURATION);
+                int idIndex = cursor.getColumnIndexOrThrow(CallLog.Calls._ID);
+                int typeIndex = cursor.getColumnIndexOrThrow(CallLog.Calls.TYPE);
+                int numberIndex = cursor.getColumnIndexOrThrow(CallLog.Calls.NUMBER);
+                int dateIndex = cursor.getColumnIndexOrThrow(CallLog.Calls.DATE);
+                int durationIndex = cursor.getColumnIndexOrThrow(CallLog.Calls.DURATION);
 
                 while (cursor.moveToNext()) {
                     long id = cursor.getLong(idIndex);
diff --git a/app/src/main/java/dummydomain/yetanothercallblocker/data/ContactsHelper.java b/app/src/main/java/dummydomain/yetanothercallblocker/data/ContactsHelper.java
index 789e4b4..df10791 100644
--- a/app/src/main/java/dummydomain/yetanothercallblocker/data/ContactsHelper.java
+++ b/app/src/main/java/dummydomain/yetanothercallblocker/data/ContactsHelper.java
@@ -27,9 +27,9 @@ public class ContactsHelper {
         try (Cursor cursor = resolver.query(uri, PROJECTION, null, null, null)) {
             if (cursor != null && cursor.moveToFirst()) {
                 ContactItem contact = new ContactItem(
-                        cursor.getLong(cursor.getColumnIndex(
+                        cursor.getLong(cursor.getColumnIndexOrThrow(
                                 ContactsContract.Contacts._ID)),
-                        cursor.getString(cursor.getColumnIndex(
+                        cursor.getString(cursor.getColumnIndexOrThrow(
                                 ContactsContract.Contacts.DISPLAY_NAME))
                 );