diff --git a/src/main/resources/messages.properties b/src/main/resources/messages.properties
index 38fbac46..71f7206d 100644
--- a/src/main/resources/messages.properties
+++ b/src/main/resources/messages.properties
@@ -1449,7 +1449,7 @@ sebserver.examconfig.props.group.zoom_features.tooltip=
 sebserver.examconfig.props.group.zoom_controls=Zoom User Controls
 sebserver.examconfig.props.group.zoom_controls.tooltip=When the proctoring view is disabled (see its display policy on left), users can mute and unmute audio and video manually.<br/>Audio and video streams can be disabled globally with the settings below.
 sebserver.examconfig.props.label.zoomAudioMuted=Audio Initially Muted
-sebserver.examconfig.props.label.zoomAudioMuted.tooltip=Not yet implemented
+sebserver.examconfig.props.label.zoomAudioMuted.tooltip=If this option is activated, client proctoring windows will start muted.<br/>The SEB users then can start/stop their audio individually using the respective button in the Zoom windows in SEB.<br/>If the Proctoring View Display Policy is set to "Never", this option will have no effect.
 sebserver.examconfig.props.label.zoomAudioOnly=Audio Only
 sebserver.examconfig.props.label.zoomAudioOnly.tooltip=If this option is activated, cameras on SEB clients are not active until the proctoring window is opened by the proctor<br/>(and they are deactivated if it is closed again!)
 sebserver.examconfig.props.label.zoomEnable=Enable Zoom