--- a/src/pyams_skin/resources/js/myams.js	Thu Jul 05 12:41:22 2018 +0200
+++ b/src/pyams_skin/resources/js/myams.js	Fri Jul 06 08:00:15 2018 +0200
@@ -3060,7 +3060,9 @@
 					svgs.each(function() {
 						var container = $(this);
 						var svg = $('svg', container);
-						svg.get(0).setAttribute('viewBox', '0 0 ' + Math.round(svg.attr('width')) + ' ' + Math.round(svg.attr('height')));
+						svg.get(0).setAttribute('viewBox',
+												'0 0 ' + Math.round(parseFloat(svg.attr('width'))) + ' ' +
+														 Math.round(parseFloat(svg.attr('height'))));
 						svg.attr('width', '100%')
 						   .attr('height', 'auto');
 					})