--- httpd-2.0.48/server/protocol.c.orig      Wed Sep 10 20:13:51 2003
+++ httpd-2.0.48/server/protocol.c   Wed Feb  4 11:50:49 2004
@@ -1255,7 +1255,7 @@
      * We can only set a C-L in the response header if we haven't already
      * sent any buckets on to the next output filter for this request.
      */
-    if (ctx->data_sent == 0 && eos) {
+    if (ctx->data_sent == 0 && eos && !r->header_only) {
         ap_set_content_length(r, r->bytes_sent);
     }