diff --git a/arclight/app/components/oac/search_document_component.rb b/arclight/app/components/oac/search_document_component.rb
index 1ccee036..94538791 100644
--- a/arclight/app/components/oac/search_document_component.rb
+++ b/arclight/app/components/oac/search_document_component.rb
@@ -12,7 +12,7 @@ def search_bar
 
       def search_bar_component
         params = helpers.search_state.params_for_search.except(:qt)
-        params["f[collection][]"] = @document.collection.normalized_title
+        params["f[collection][]"] = @document.collection.oac_normalized_title
 
         Oac::SearchBarComponent.new(
           placeholder_text: "Search this collection",