diff --git a/app/models/concerns/sanitizable.rb b/app/models/concerns/sanitizable.rb
index 65c8431ef..261eccbf2 100644
--- a/app/models/concerns/sanitizable.rb
+++ b/app/models/concerns/sanitizable.rb
@@ -13,7 +13,7 @@ module Sanitizable
     end
 
     def sanitize_tag_list
-      self.tag_list = TagSanitizer.new.sanitize_tag_list(self.tag_list)
+      self.tag_list = TagSanitizer.new.sanitize_tag_list(self.tag_list) if self.class.taggable?
     end
 
 end