diff --git a/modules/http/http_request.c b/modules/http/http_request.c
index f7dec6aeb5..b95fb04d7c 100644
--- a/modules/http/http_request.c
+++ b/modules/http/http_request.c
@@ -390,6 +390,8 @@ static request_rec *internal_internal_redirect(const char *new_uri,
     new->output_filters  = r->connection->output_filters;
     new->input_filters   = r->connection->input_filters;
 
+    ap_add_input_filter("HTTP_IN", NULL, new, new->connection);
+
     apr_table_setn(new->subprocess_env, "REDIRECT_STATUS",
 	apr_psprintf(r->pool, "%d", r->status));