diff --git a/src/modules/module-alsa-sink.c b/src/modules/module-alsa-sink.c
index af03a958b..5491aac53 100644
--- a/src/modules/module-alsa-sink.c
+++ b/src/modules/module-alsa-sink.c
@@ -837,9 +837,10 @@ int pa__init(pa_module*m) {
     pa_sink_set_module(u->sink, m);
     pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
     pa_sink_set_description(u->sink, t = pa_sprintf_malloc(
-                                    "ALSA PCM on %s (%s)",
+                                    "ALSA PCM on %s (%s)%s",
                                     dev,
-                                    snd_pcm_info_get_name(pcm_info)));
+                                    snd_pcm_info_get_name(pcm_info),
+                                    use_mmap ? " via DMA" : ""));
     pa_xfree(t);
     
     u->sink->is_hardware = 1;
diff --git a/src/modules/module-alsa-source.c b/src/modules/module-alsa-source.c
index 5de240699..b64718502 100644
--- a/src/modules/module-alsa-source.c
+++ b/src/modules/module-alsa-source.c
@@ -811,9 +811,10 @@ int pa__init(pa_module*m) {
     pa_source_set_module(u->source, m);
     pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
     pa_source_set_description(u->source, t = pa_sprintf_malloc(
-                                      "ALSA PCM on %s (%s)",
+                                      "ALSA PCM on %s (%s)%s",
                                       dev,
-                                      snd_pcm_info_get_name(pcm_info)));
+                                      snd_pcm_info_get_name(pcm_info),
+                                      use_mmap ? " via DMA" : ""));
     pa_xfree(t);
 
     u->source->is_hardware = 1;