diff --git a/coreapi/private.h b/coreapi/private.h
index 7fbc6d8cb..3042342d2 100644
--- a/coreapi/private.h
+++ b/coreapi/private.h
@@ -421,10 +421,10 @@ typedef struct sound_config
 	struct _MSSndCard * lsd_card; /* dummy playback card for Linphone Sound Daemon extension */
 	const char **cards;
 	int latency;	/* latency in samples of the current used sound device */
+	float soft_play_lev; /*playback gain in db.*/
 	char rec_lev;
 	char play_lev;
 	char ring_lev;
-	char soft_play_lev;
 	char source;
 	char *local_ring;
 	char *remote_ring;