diff --git a/libsndio/sio_oss.c b/libsndio/sio_oss.c
index 22f4b47..4ba910c 100644
--- a/libsndio/sio_oss.c
+++ b/libsndio/sio_oss.c
@@ -459,7 +459,7 @@ sio_oss_setpar(struct sio_hdl *sh, struct sio_par *par)
 	}
 
 	frag_max = round * hdl->chan * formats[i].bps;
-	frag_shift = 0;
+	frag_shift = 8;
 	while (1 << (frag_shift + 1) <= frag_max)
 		frag_shift++;