diff --git a/plugins/feature/startracker/readme.md b/plugins/feature/startracker/readme.md
index f563e9e13..bd3db7958 100644
--- a/plugins/feature/startracker/readme.md
+++ b/plugins/feature/startracker/readme.md
@@ -132,7 +132,7 @@ For all other target settings, this displays the calculated elevation (angle in
 
 <h3>Light or dark theme</h3>
 
-click on this icon ![Star Tracker Chart theme](../../../doc/img/StarTracker_chart_theme.png) to switch between light and dark themes for the charts.
+Click on this icon ![Star Tracker Chart theme](../../../doc/img/StarTracker_chart_theme.png) to switch between light and dark themes for the charts.
 
 <h3>Elevation vs time</h3>
 
@@ -162,7 +162,7 @@ To see this figure, which will be typically lower than the above, select one of
 <h3>Drift scan path</h3>
 
 When the target (11) is set to Custom Az/El and the Sky temperature plot is displayed, a curve showing the drift scan path over a 24 hour period will be displayed.
-This assumes the azimuth and elevation will be held constant and the path shows how the part of the sky the antenna will point to as the Earth rotates.
+This assumes the azimuth and elevation will be held constant and the path shows the part of the sky the antenna will point to as the Earth rotates.
 
 ![Drift scan path](../../../doc/img/StarTracker_driftscan.png)
 
diff --git a/plugins/feature/startracker/startrackergui.cpp b/plugins/feature/startracker/startrackergui.cpp
index 9a29ceb4e..a50da8f89 100644
--- a/plugins/feature/startracker/startrackergui.cpp
+++ b/plugins/feature/startracker/startrackergui.cpp
@@ -109,8 +109,10 @@ bool StarTrackerGUI::handleMessage(const Message& message)
     else if (StarTrackerReport::MsgReportAzAl::match(message))
     {
         StarTrackerReport::MsgReportAzAl& azAl = (StarTrackerReport::MsgReportAzAl&) message;
+        blockApplySettings(true);
         ui->azimuth->setValue(azAl.getAzimuth());
         ui->elevation->setValue(azAl.getElevation());
+        blockApplySettings(false);
         return true;
     }
     else if (StarTrackerReport::MsgReportRADec::match(message))