diff --git a/src/streamrestore.cpp b/src/streamrestore.cpp
--- a/src/streamrestore.cpp
+++ b/src/streamrestore.cpp
@@ -100,6 +100,13 @@
 void StreamRestore::setVolume(qint64 volume)
 {
     pa_cvolume vol = m_cache.valid ? m_cache.volume : m_volume;
+
+    // If no channel exists force one. We need one to be able to control the volume
+    // See https://bugs.kde.org/show_bug.cgi?id=407397
+    if (vol.channels == 0) {
+        vol.channels = 1;
+    }
+
     for (int i = 0; i < vol.channels; ++i) {
         vol.values[i] = volume;
     }
@@ -190,6 +197,13 @@
     info.device = deviceData.isEmpty() ? nullptr : deviceData.constData();
     info.mute = muted;
 
+    // If no channel exists force one. We need one to be able to control the volume
+    // See https://bugs.kde.org/show_bug.cgi?id=407397
+    if (info.channel_map.channels == 0) {
+        info.channel_map.channels = 1;
+        info.channel_map.map[0] = PA_CHANNEL_POSITION_MONO;
+    }
+
     m_cache.valid = true;
     m_cache.volume = volume;
     m_cache.muted = muted;