diff --git a/app/assets/javascripts/discourse/templates/topic.js.handlebars b/app/assets/javascripts/discourse/templates/topic.js.handlebars
index cff006998..3429239b1 100644
--- a/app/assets/javascripts/discourse/templates/topic.js.handlebars
+++ b/app/assets/javascripts/discourse/templates/topic.js.handlebars
@@ -86,7 +86,7 @@
                                  loadingHTML=controller.loadingHTML
                                  preservesContext="true"
                                  uncloakDefault="true"
-                                 offsetFixed="header"
+                                 offsetFixedTop="header"
                                  offsetFixedBottom="#reply-control"}}
           {{/unless}}