diff --git a/app/models/communication/block.rb b/app/models/communication/block.rb
index 9c1a12b62e18038f9c59966f9222933de883c357..1369e18f480bf3ac5acbfd4bdc4871e74834f8ee 100644
--- a/app/models/communication/block.rb
+++ b/app/models/communication/block.rb
@@ -99,7 +99,7 @@ class Communication::Block < ApplicationRecord
 
   def language
     return @language if defined?(@language)
-    @language ||= about.respond_to?(:language) ? about.language : nil
+    @language ||= about.respond_to?(:language) ? about.language : about.university.default_language
   end
 
   def duplicate