diff --git a/themes/default/theme.css b/themes/default/theme.css
index af964011f..f454bf698 100644
--- a/themes/default/theme.css
+++ b/themes/default/theme.css
@@ -432,7 +432,8 @@ TD.calDayCellFull, TD.calDayCellEmpty {
 
 #linkPrev img.svgImg,
 #linkNext img.svgImg {
-  max-width: 50px;
+  width: 50px;
+  height: 50px;
 }
 
 DIV.thumbHover{ /*only first & last holders are divs*/