diff --git a/lime/_backend/native/NativeAudioSource.hx b/lime/_backend/native/NativeAudioSource.hx
index 4ab92f928..2cb1c3bb8 100644
--- a/lime/_backend/native/NativeAudioSource.hx
+++ b/lime/_backend/native/NativeAudioSource.hx
@@ -65,6 +65,7 @@ class NativeAudioSource {
 	
 	public function init ():Void {
 		
+		dataLength = 0;
 		format = 0;
 		
 		if (parent.buffer.channels == 1) {
@@ -512,4 +513,4 @@ class NativeAudioSource {
 	}
 	
 	
-}
\ No newline at end of file
+}