diff --git a/src/theme/index.hbs b/src/theme/index.hbs
index 24c4c13a..7c5ed7fd 100644
--- a/src/theme/index.hbs
+++ b/src/theme/index.hbs
@@ -105,7 +105,7 @@
             <div class="sidebar-scrollbox">
                 {{#if book_logo }}
                 <div class="sidebar-book-logo">
-                    <img src="{{ book_logo }}">
+                    <img src="{{ path_to_root }}{{ book_logo }}">
                 </div>
                 {{/if}}
                 {{#toc}}{{/toc}}