diff --git a/src/pulsecore/sink.c b/src/pulsecore/sink.c
index b0c360d66..041295c40 100644
--- a/src/pulsecore/sink.c
+++ b/src/pulsecore/sink.c
@@ -1406,7 +1406,7 @@ void pa_sink_enter_passthrough(pa_sink *s) {
     s->saved_volume = *pa_sink_get_volume(s, TRUE);
     s->saved_save_volume = s->save_volume;
 
-    pa_cvolume_set(&volume, s->sample_spec.channels, s->base_volume);
+    pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
     pa_sink_set_volume(s, &volume, TRUE, FALSE);
 }
 
diff --git a/src/pulsecore/source.c b/src/pulsecore/source.c
index d79dbb15f..bc951af87 100644
--- a/src/pulsecore/source.c
+++ b/src/pulsecore/source.c
@@ -986,7 +986,7 @@ void pa_source_enter_passthrough(pa_source *s) {
     s->saved_volume = *pa_source_get_volume(s, TRUE);
     s->saved_save_volume = s->save_volume;
 
-    pa_cvolume_set(&volume, s->sample_spec.channels, s->base_volume);
+    pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
     pa_source_set_volume(s, &volume, TRUE, FALSE);
 }