diff --git a/backend/app/controllers/api/v1/researcher/analysis_controller.rb b/backend/app/controllers/api/v1/researcher/analysis_controller.rb
index 098268bf9..c988b2a74 100644
--- a/backend/app/controllers/api/v1/researcher/analysis_controller.rb
+++ b/backend/app/controllers/api/v1/researcher/analysis_controller.rb
@@ -50,7 +50,7 @@ def update
 
   def download_run_results
     run = @analysis.runs.find(params[:run_id])
-    redirect_to url_for(run.output, allow_other_host: true)
+    redirect_to(url_for(run.output), allow_other_host: true)
   end
 
   def update_run