diff --git a/lib/libzfs/libzfs_config.c b/lib/libzfs/libzfs_config.c
index be96c42285..875af8d33d 100644
--- a/lib/libzfs/libzfs_config.c
+++ b/lib/libzfs/libzfs_config.c
@@ -123,7 +123,7 @@ namespace_reload(libzfs_handle_t *hdl)
 			return (no_memory(hdl));
 	}
 
-	if (zcmd_alloc_dst_nvlist(hdl, &zc, 32768) != 0)
+	if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0)
 		return (-1);
 
 	for (;;) {
diff --git a/lib/libzfs/libzfs_util.c b/lib/libzfs/libzfs_util.c
index 58eb8aa6bf..f99ad6b09c 100644
--- a/lib/libzfs/libzfs_util.c
+++ b/lib/libzfs/libzfs_util.c
@@ -682,7 +682,7 @@ int
 zcmd_alloc_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, size_t len)
 {
 	if (len == 0)
-		len = 2048;
+		len = 128*1024;
 	zc->zc_nvlist_dst_size = len;
 	if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t)
 	    zfs_alloc(hdl, zc->zc_nvlist_dst_size)) == 0)