diff --git a/app/controllers/people/competence_notes_controller.rb b/app/controllers/people/competence_notes_controller.rb
index 0f0de154c..4e3a5e9f5 100644
--- a/app/controllers/people/competence_notes_controller.rb
+++ b/app/controllers/people/competence_notes_controller.rb
@@ -9,6 +9,6 @@ def self.model_class
   end
 
   def computed_size
-    [@person.competence_notes&.lines&.count, 10].max
+    [@person.competence_notes&.lines&.count, 10].compact.max
   end
 end