diff --git a/modules/audio_output/alsa.c b/modules/audio_output/alsa.c
index 967738aaa35aae1caf6e2df0dc3cea1ebcb9d418..873bab0ba95f35a11014470e54f3b07f105b3729 100644
--- a/modules/audio_output/alsa.c
+++ b/modules/audio_output/alsa.c
@@ -234,6 +234,7 @@ static void Probe( aout_instance_t * p_aout,
     if( val.i_int <= 0 )
     {
         /* Probe() has failed. */
+        msg_Dbg( p_aout, "failed to find a useable alsa configuration" );
         var_Destroy( p_aout, "audio-device" );
         return;
     }