diff --git a/gerbview/rs274d.cpp b/gerbview/rs274d.cpp
index d4bcf80354..b817d18611 100644
--- a/gerbview/rs274d.cpp
+++ b/gerbview/rs274d.cpp
@@ -6,7 +6,7 @@
 /*
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
- * Copyright (C) 1992-2021 KiCad Developers, see AUTHORS.txt for contributors.
+ * Copyright (C) 1992-2022 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -361,7 +361,10 @@ static void fillArcPOLY( GERBER_DRAW_ITEM* aGbrItem, const wxPoint& aStart, cons
     // start_angle < end_angle. So ensure this is the case here:
     // Due to the fact atan2 returns angles between -180 to + 180 degrees,
     // this is not always the case ( a modulo 360.0 degrees can be lost )
-    if( start_angle > end_angle )
+    //
+    // Note also an arc with same start and end angle is a circle (360 deg arc)
+    // in gerber files
+    if( start_angle >= end_angle )
         end_angle += 3600;
 
     double arc_angle = start_angle - end_angle;