1 files changed, 8 insertions, 5 deletions
diff --git a/lib/banzai/filter/image_link_filter.rb b/lib/banzai/filter/image_link_filter.rb
index 60881b5f511..262c0b5340d 100644
--- a/lib/banzai/filter/image_link_filter.rb
+++ b/lib/banzai/filter/image_link_filter.rb
@@ -34,17 +34,20 @@ module Banzai
             img.remove_attribute('data-diagram-src')
           end
 
-          link.children = if link_replaces_image
-                            img['alt'] || img['data-src'] || img['src']
-                          else
-                            img.clone
-                          end
+          link.children = link_replaces_image ? link_children(img) : img.clone
 
           img.replace(link)
         end
 
         doc
       end
+
+      private
+
+      def link_children(img)
+        [img['alt'], img['data-src'], img['src']]
+          .map { |f| Sanitize.fragment(f).presence }.compact.first || ''
+      end
     end
   end
 end