burger-close

assets/sass/_theme/_configuration.sass

@@ -206,6 +206,7 @@ $icons: map-merge($icons, ("eye": "\e901"))
 $icons: map-merge($icons, ("download": "\e900"))
 $icons: map-merge($icons, ("close": "\e90e"))
 $icons: map-merge($icons, ("burger": "\e902"))
+$icons: map-merge($icons, ("burger-close": "\e905"))
 $icons: map-merge($icons, ("arrow-next": "\e909"))
 $icons: map-merge($icons, ("arrow-previous": "\e908"))
 $icons: map-merge($icons, ("arrow-last": "\e907"))

assets/sass/_theme/design-system/header.sass

@@ -118,5 +118,5 @@ header#document-header
             &[aria-expanded="true"]
                 span:last-of-type
                     &::before
-                        content: map-get($icons, "close")
+                        content: map-get($icons, "burger-close")
                         margin-right: $icon-close-margin-right