diff --git a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt
index 51b902b4..5c69142b 100644
--- a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt
@@ -326,10 +326,9 @@ class ThreadActivity : SimpleActivity() {
     }
 
     private fun blockNumber() {
-        val baseString = R.string.block_confirmation
-        val numbers = participants.map { it.phoneNumber }.toTypedArray()
+        val numbers = participants.map { it.phoneNumber }
         val numbersString = TextUtils.join(", ", numbers)
-        val question = String.format(resources.getString(baseString), numbersString)
+        val question = String.format(resources.getString(R.string.block_confirmation), numbersString)
 
         ConfirmationDialog(this, question) {
             ensureBackgroundThread {
diff --git a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/adapters/ConversationsAdapter.kt b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/adapters/ConversationsAdapter.kt
index 74f1df0f..db5e1c51 100644
--- a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/adapters/ConversationsAdapter.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/adapters/ConversationsAdapter.kt
@@ -78,9 +78,9 @@ class ConversationsAdapter(activity: SimpleActivity, var conversations: ArrayLis
     override fun getItemCount() = conversations.size
 
     private fun askConfirmBlock() {
-        val numbers = TextUtils.join(", ", getSelectedItems().distinctBy { it.phoneNumber }.map { it.phoneNumber })
-        val baseString = R.string.block_confirmation
-        val question = String.format(resources.getString(baseString), numbers)
+        val numbers = getSelectedItems().distinctBy { it.phoneNumber }.map { it.phoneNumber }
+        val numbersString = TextUtils.join(", ", numbers)
+        val question = String.format(resources.getString(R.string.block_confirmation), numbersString)
 
         ConfirmationDialog(activity, question) {
             blockNumbers()