diff --git a/UI/testui.htm b/UI/testui.htm
index 87ecc591..6b1267bd 100644
--- a/UI/testui.htm
+++ b/UI/testui.htm
@@ -261,6 +261,7 @@ function initrange( element)
  
 </script>
 
+<svg width="440" height="230" xmlns="http://www.w3.org/2000/svg" version="1.1" viewbox="0 0 440 230">
 <defs>
 <filter id="light" >
   <feGaussianBlur in="SourceAlpha"