diff --git a/modules/audio/audio_hw.c b/modules/audio/audio_hw.c
index 3051519..2f44d95 100644
--- a/modules/audio/audio_hw.c
+++ b/modules/audio/audio_hw.c
@@ -105,7 +105,7 @@
                          size_t bytes)
 {
     /* XXX: fake timing for audio output */
-    usleep(bytes * 1000000 / audio_stream_frame_size(&stream->common) /
+    usleep(bytes * 1000000 / audio_stream_out_frame_size(stream) /
            out_get_sample_rate(&stream->common));
     return bytes;
 }
@@ -193,7 +193,7 @@
                        size_t bytes)
 {
     /* XXX: fake timing for audio input */
-    usleep(bytes * 1000000 / audio_stream_frame_size(&stream->common) /
+    usleep(bytes * 1000000 / audio_stream_in_frame_size(stream) /
            in_get_sample_rate(&stream->common));
     return bytes;
 }