diff --git a/rdjson_formatter/rdjson_formatter.rb b/rdjson_formatter/rdjson_formatter.rb
index 630e608..2026a5d 100644
--- a/rdjson_formatter/rdjson_formatter.rb
+++ b/rdjson_formatter/rdjson_formatter.rb
@@ -16,6 +16,8 @@ def started(_target_files)
 
   def file_finished(file, offenses)
     offenses.each do |offense|
+      next if offense.location == RuboCop::Cop::Offense::NO_LOCATION
+
       @rdjson[:diagnostics] << build_diagnostic(file, offense)
     end
   end