diff --git a/lib/jazzy/doc_builder.rb b/lib/jazzy/doc_builder.rb
index 4ca8067ac..8de6a5d8d 100644
--- a/lib/jazzy/doc_builder.rb
+++ b/lib/jazzy/doc_builder.rb
@@ -183,7 +183,7 @@ def self.undocumented_warnings(decls)
       decls.map do |decl|
         {
           file: decl.file,
-          line: decl.line || decl.start_line,
+          line: decl.start_line || decl.line,
           symbol: decl.fully_qualified_name,
           symbol_kind: decl.type.kind,
           warning: 'undocumented',