diff --git a/inst/resources/gitbook/css/plugin-fontsettings.css b/inst/resources/gitbook/css/plugin-fontsettings.css
index b25e8a6de..98cd75749 100644
--- a/inst/resources/gitbook/css/plugin-fontsettings.css
+++ b/inst/resources/gitbook/css/plugin-fontsettings.css
@@ -302,7 +302,3 @@ div.book.color-theme-2 {
   font-weight: 600;
 }
 
-/* line-height */
-.book .book-body .page-wrapper .page-inner section.normal {
-   line-height: attr(data-line-height);
-}
diff --git a/inst/resources/gitbook/js/plugin-fontsettings.js b/inst/resources/gitbook/js/plugin-fontsettings.js
index aad6027b3..df2651b14 100644
--- a/inst/resources/gitbook/js/plugin-fontsettings.js
+++ b/inst/resources/gitbook/js/plugin-fontsettings.js
@@ -88,8 +88,8 @@ gitbook.require(["gitbook", "lodash", "jQuery"], function(gitbook, _, $) {
             $book[0].className = $book[0].className.replace(/\bcolor-theme-\S+/g, '');
             $book.addClass("color-theme-"+fontState.theme);
         }
-        $book[0].querySelector('section').dataset.lineHeight = fontState.spacing / 10;
-        
+        var lineHeight = Math.max(fontState.spacing / 10, 1);
+        $book.find('section').css('line-height', lineHeight);
     };
 
     function init(config) {