diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 06e1d062..7ed4364f 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -20,7 +20,7 @@ def set_copyright
   end
 
   def get_controller(url)
-    Rails.application.routes.recognize_path(url)[:controller]
+    Rails.application.routes.recognize_path(url.to_s)[:controller]
   end
 
   def active?(controller, url, klass)
diff --git a/app/views/shared/_application_nav.html.erb b/app/views/shared/_application_nav.html.erb
index a838cfda..ce041903 100644
--- a/app/views/shared/_application_nav.html.erb
+++ b/app/views/shared/_application_nav.html.erb
@@ -9,7 +9,7 @@
           <path d="M4 12v6a8 3 0 0 0 16 0v-6"></path>
         </svg>
         <p class="hidden lg:block">
-          <% unless Rails.application.routes.recognize_path(:samples)[:controller] == params[:controller] %>
+          <% unless Rails.application.routes.recognize_path("samples")[:controller] == params[:controller] %>
             ITMO Heritage Science DB
           <% else %>
             ITMO Reference Spectra DB