diff --git a/public/css/icinga/base.less b/public/css/icinga/base.less
index 539a981b87..20a9836a27 100644
--- a/public/css/icinga/base.less
+++ b/public/css/icinga/base.less
@@ -93,9 +93,9 @@
 @color-restricted: #dede7d;
 
 // Font families
-@font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
-@font-family-fixed: "Liberation Mono", "Lucida Console", Courier, monospace;
-@font-family-wide: Tahoma, Verdana, sans-serif;
+@font-family: system-ui, sans-serif;
+@font-family-fixed: ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, Liberation Mono, monospace;
+@font-family-wide: @font-family;
 
 // Font sizes
 @font-size: 0.750em; // 12px
diff --git a/public/css/icinga/nav.less b/public/css/icinga/nav.less
index cd8f9d0ef8..91a24ff3fe 100644
--- a/public/css/icinga/nav.less
+++ b/public/css/icinga/nav.less
@@ -45,10 +45,6 @@
   }
 }
 
-.primary-nav a {
-  font-weight: 500;
-}
-
 .remove-nav-item {
   padding-left: 2em;
 }