diff --git a/adi_builder.py b/adi_builder.py
index 64d8600..c6e7142 100644
--- a/adi_builder.py
+++ b/adi_builder.py
@@ -182,6 +182,6 @@ if __name__ == "__main__" :
     tree = ET.ElementTree(root)
 
     try:
-        tree.write(f'{args.output}/adi.xml', encoding='utf-8', xml_declaration=True, pretty_print=True, doctype='<!DOCTYPE ADI PUBLIC "ADI" "ADI.DTD">')
+        tree.write(f'{args.output}/adi.xml', encoding='utf-8', xml_declaration=True, pretty_print=True, doctype='<!DOCTYPE ADI SYSTEM "ADI.DTD">')
     except Exception as e:
         print(str(e))