diff --git a/lib/modules/summarization/models/anthropic.rb b/lib/modules/summarization/models/anthropic.rb
index 7b78897c..151545a3 100644
--- a/lib/modules/summarization/models/anthropic.rb
+++ b/lib/modules/summarization/models/anthropic.rb
@@ -114,7 +114,7 @@ module DiscourseAi
               )
           end
 
-          Nokogiri::HTML5.fragment(response).at("ai").text.presence || response
+          Nokogiri::HTML5.fragment(response).at("ai")&.text.presence || response
         end
 
         def tokenizer