diff --git a/app/assets/javascripts/sidebar.js.es6 b/app/assets/javascripts/sidebar.js.es6
index 6c3a1f3307ad3dac180ba1793c22a421c59919dd..d0ddb5be09904e437a86688869064314ac6c2216 100644
--- a/app/assets/javascripts/sidebar.js.es6
+++ b/app/assets/javascripts/sidebar.js.es6
@@ -72,6 +72,8 @@
       const diff = $navHeight - $('body').scrollTop();
       if (diff > 0) {
         $('.right-sidebar').outerHeight($(window).height() - diff);
+      } else {
+        $('.right-sidebar').outerHeight('100%');
       }
     }