diff --git a/themes/luci-theme-openwrt/htdocs/luci-static/openwrt.org/cascade.css b/themes/luci-theme-openwrt/htdocs/luci-static/openwrt.org/cascade.css
index 34896af979..f312c4cdca 100644
--- a/themes/luci-theme-openwrt/htdocs/luci-static/openwrt.org/cascade.css
+++ b/themes/luci-theme-openwrt/htdocs/luci-static/openwrt.org/cascade.css
@@ -415,7 +415,7 @@ div.hostinfo {
 	border: 1px solid #90c0e0;
 	background: #000 !important;
 	color: #90c0e0 !important;
-	padding: calc(.125em-1px) calc(.5em-1px);
+	padding: calc(.125em - 1px) calc(.5em - 1px);
 }
 
 html #menubar a:link,