diff --git a/src/mathed/ChangeLog b/src/mathed/ChangeLog
index d371a8c66d..502a39dd0a 100644
--- a/src/mathed/ChangeLog
+++ b/src/mathed/ChangeLog
@@ -1,3 +1,7 @@
+2004-10-05  Andreas Vox  <vox@isp.uni-luebeck.de>
+
+	* math_hullinset.C (docbook): write additional <alt role="tex" > tag for	Docbook  XML
+
 2004-09-21  Jean-Marc Lasgouttes  <lasgouttes@lyx.org>
 
 	* math_hullinset.C (plaintext): remove extraneous spaces
diff --git a/src/mathed/math_hullinset.C b/src/mathed/math_hullinset.C
index 27e762754a..941c438624 100644
--- a/src/mathed/math_hullinset.C
+++ b/src/mathed/math_hullinset.C
@@ -1345,8 +1345,14 @@ int MathHullInset::docbook(Buffer const & buf, ostream & os,
 		ms <<   MTag("math");
 		MathGridInset::mathmlize(ms);
 		ms <<   ETag("math");
+		ms <<   MTag("alt role=\"tex\" ");
+		ostringstream ls;
+		WriteStream wi(ls, false, false);
+		MathGridInset::write(wi);
+		ms << ls.str();
+		ms <<   ETag("alt");
 	} else {
-		ms <<   MTag("alt");
+		ms <<   MTag("alt role=\"tex\" ");
 		res = latex(buf, ms.os(), runparams);
 		ms <<   ETag("alt");
 	}