diff --git a/doc/html/ada/index.htm b/doc/html/ada/index.htm
index 4a13484..b0a6a84 100644
--- a/doc/html/ada/index.htm
+++ b/doc/html/ada/index.htm
@@ -1,6 +1,9 @@
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN">
 <HTML>
-<HEAD><TITLE>Source Browser</TITLE></HEAD>
+<HEAD>
+<TITLE>Source Browser</TITLE>
+<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+</HEAD>
 <FRAMESET COLS="250,*">
 <NOFRAMES>
 <H2 ALIGN=CENTER>Files</H2>