Index: uspace/srv/audio/hound/audio_device.c
===================================================================
--- uspace/srv/audio/hound/audio_device.c	(revision 38d150e6238ab44c861f6486e46454e07caeb0f0)
+++ uspace/srv/audio/hound/audio_device.c	(revision 9246016f2cd9a449613c5c8a7e45dcdc5c78a8f5)
@@ -121,5 +121,7 @@
 {
 	assert(dev);
-	if (audio_pcm_query_cap(dev->sess, AUDIO_CAP_CAPTURE))
+	sysarg_t val;
+	int rc = audio_pcm_query_cap(dev->sess, AUDIO_CAP_CAPTURE, &val);
+	if (rc == EOK && val)
 		return &dev->source;
 	return NULL;
@@ -135,5 +137,7 @@
 {
 	assert(dev);
-	if (audio_pcm_query_cap(dev->sess, AUDIO_CAP_PLAYBACK))
+	sysarg_t val;
+	int rc = audio_pcm_query_cap(dev->sess, AUDIO_CAP_PLAYBACK, &val);
+	if (rc == EOK && val)
 		return &dev->sink;
 	return NULL;