diff --git a/app/src/main/java/ai/elimu/content_provider/rest/LetterSoundsService.java b/app/src/main/java/ai/elimu/content_provider/rest/LetterSoundsService.java
deleted file mode 100644
index 0dfd3f73..00000000
--- a/app/src/main/java/ai/elimu/content_provider/rest/LetterSoundsService.java
+++ /dev/null
@@ -1,13 +0,0 @@
-package ai.elimu.content_provider.rest;
-
-import java.util.List;
-
-import ai.elimu.model.v2.gson.content.LetterSoundGson;
-import retrofit2.Call;
-import retrofit2.http.GET;
-
-public interface LetterSoundsService {
-
-    @GET("content/letter-sounds")
-    Call<List<LetterSoundGson>> listLetterSounds();
-}
diff --git a/app/src/main/java/ai/elimu/content_provider/rest/LetterSoundsService.kt b/app/src/main/java/ai/elimu/content_provider/rest/LetterSoundsService.kt
new file mode 100644
index 00000000..004986f5
--- /dev/null
+++ b/app/src/main/java/ai/elimu/content_provider/rest/LetterSoundsService.kt
@@ -0,0 +1,10 @@
+package ai.elimu.content_provider.rest
+
+import ai.elimu.model.v2.gson.content.LetterSoundGson
+import retrofit2.Call
+import retrofit2.http.GET
+
+interface LetterSoundsService {
+    @GET("content/letter-sounds")
+    fun listLetterSounds(): Call<List<LetterSoundGson>>
+}
diff --git a/app/src/main/java/ai/elimu/content_provider/ui/letter_sound/LetterSoundsFragment.kt b/app/src/main/java/ai/elimu/content_provider/ui/letter_sound/LetterSoundsFragment.kt
index 9d747438..76f64cc6 100644
--- a/app/src/main/java/ai/elimu/content_provider/ui/letter_sound/LetterSoundsFragment.kt
+++ b/app/src/main/java/ai/elimu/content_provider/ui/letter_sound/LetterSoundsFragment.kt
@@ -72,6 +72,10 @@ class LetterSoundsFragment : Fragment() {
 
                     if (letterSoundGsons.isNotEmpty()) {
                         processResponseBody(letterSoundGsons)
+                    } else {
+                        binding.progressBarLetterSounds.visibility = View.GONE
+                        binding.textLetterSounds.text =
+                            getString(R.string.lettersounds_size, 0)
                     }
                 } else {
                     context?.let { context ->