diff --git a/assets/javascripts/discourse/templates/knowledge-explorer.hbs b/assets/javascripts/discourse/templates/knowledge-explorer.hbs
index 08fda0b..09ce5f4 100644
--- a/assets/javascripts/discourse/templates/knowledge-explorer.hbs
+++ b/assets/javascripts/discourse/templates/knowledge-explorer.hbs
@@ -1,5 +1,5 @@
 <div class="knowledge-explorer">
-  {{plugin-outlet name="before-knowledge-explorer-search"}}
+  {{plugin-outlet name="before-knowledge-explorer-search" args=(hash selectCategory=(action "updateSelectedCategories"))}}
   {{knowledge-explorer-search
     searchTerm=(readonly searchTerm)
     onSearch=(action "performSearch")