diff --git a/android/src/games/lightsout/godot/tts/TTS.java b/android/src/games/lightsout/godot/tts/TTS.java
index 16b8590..6b1cc42 100644
--- a/android/src/games/lightsout/godot/tts/TTS.java
+++ b/android/src/games/lightsout/godot/tts/TTS.java
@@ -43,7 +43,7 @@ public class TTS extends Godot.SingletonBase implements TextToSpeech.OnInitListe
         return this.rate;
     }
 
-    public void set_rate(Float rate) {
+    public void set_rate(float rate) {
         this.rate = rate;
         tts.setSpeechRate(rate);
     }