diff --git a/multimedia/graphics/graphviz/pspec.xml b/multimedia/graphics/graphviz/pspec.xml
index 945e51af94..f29df3e169 100644
--- a/multimedia/graphics/graphviz/pspec.xml
+++ b/multimedia/graphics/graphviz/pspec.xml
@@ -1,3 +1,5 @@
+<?xml version="1.0" ?>
+<!DOCTYPE PISI SYSTEM "https://pisilinux.org/projeler/pisi/pisi-spec.dtd">
 <PISI>
     <Source>
         <Name>graphviz</Name>