diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 48d9119fb..135bbb0fd 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -114,7 +114,7 @@ module ApplicationHelper
   end
 
   def fa_icon(icon, attributes = {})
-    class_names = attributes[:class]&.split(' ') || []
+    class_names = attributes[:class]&.split || []
     class_names << 'fa'
     class_names += icon.split.map { |cl| "fa-#{cl}" }