diff --git a/src/volumeobject.h b/src/volumeobject.h
--- a/src/volumeobject.h
+++ b/src/volumeobject.h
@@ -49,7 +49,7 @@
             m_muted = info->mute;
             emit mutedChanged();
         }
-        if (pa_cvolume_equal(&m_volume, &info->volume) != 0) {
+        if (!pa_cvolume_equal(&m_volume, &info->volume)) {
             m_volume = info->volume;
             emit volumeChanged();
             emit channelVolumesChanged();