diff --git a/NEWS b/NEWS
index b72e1b6d..613bfdf3 100644
--- a/NEWS
+++ b/NEWS
@@ -17,6 +17,7 @@ NEWS
   * Enable escaping of % and $ in redirect/rewrite; only two cases changed their behaviour: "%%" => "%", "$$" => "$"
   * Fix accesslog port (should be port from the connection, not the "server.port") (#1618)
   * Fix mod_fastcgi prefix matching: match the prefix always against url, not the absolute filepath (regardless of check-local)
+  * Overwrite Content-Type header in mod_dirlisting instead of inserting (#1614), patch by Henrik Holst
 
 - 1.4.19 - 2008-03-10
 
diff --git a/src/mod_dirlisting.c b/src/mod_dirlisting.c
index 50d30464..043f3d6a 100644
--- a/src/mod_dirlisting.c
+++ b/src/mod_dirlisting.c
@@ -841,11 +841,11 @@ static int http_list_directory(server *srv, connection *con, plugin_data *p, buf
 
 	/* Insert possible charset to Content-Type */
 	if (buffer_is_empty(p->conf.encoding)) {
-		response_header_insert(srv, con, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("text/html"));
+		response_header_overwrite(srv, con, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("text/html"));
 	} else {
 		buffer_copy_string(p->content_charset, "text/html; charset=");
 		buffer_append_string_buffer(p->content_charset, p->conf.encoding);
-		response_header_insert(srv, con, CONST_STR_LEN("Content-Type"), CONST_BUF_LEN(p->content_charset));
+		response_header_overwrite(srv, con, CONST_STR_LEN("Content-Type"), CONST_BUF_LEN(p->content_charset));
 	}
 
 	con->file_finished = 1;