diff -r e22c29b7ee2f -r 7b73058d782e libidav/session.c
--- a/libidav/session.c	Fri Mar 18 15:08:30 2016 +0100
+++ b/libidav/session.c	Fri Mar 18 19:54:36 2016 +0100
@@ -57,7 +57,7 @@
         sstr_t url = sstrdup_a(sn->mp->allocator, sstr(base_url));
         sn->base_url = url.ptr;
     } else {
-        char *url_str = malloc(url.length + 2);
+        char *url_str = ucx_mempool_malloc(sn->mp, url.length + 2);
         memcpy(url_str, base_url, url.length);
         url_str[url.length]     = '/';
         url_str[url.length + 1] = '\0';