diff --git a/repos/os/src/server/mixer/mixer.cc b/repos/os/src/server/mixer/mixer.cc
index e7385a1ec4..2587fc874a 100644
--- a/repos/os/src/server/mixer/mixer.cc
+++ b/repos/os/src/server/mixer/mixer.cc
@@ -601,7 +601,7 @@ class Audio_out::Mixer
 			}
 
 			_channels[ch].insert(&session);
-			_report_channels();
+			_handle_config_update();
 		}
 
 		/**
@@ -616,7 +616,7 @@ class Audio_out::Mixer
 			}
 
 			_channels[ch].remove(&session);
-			_report_channels();
+			_handle_config_update();
 		}
 
 		/**