diff --git a/src/box/lua/load_cfg.lua b/src/box/lua/load_cfg.lua
index 5c7aad4b1a283340743e14c7492796e0a1291981..6a78e2e786f12d233a429bc29143fc7096bb9f69 100644
--- a/src/box/lua/load_cfg.lua
+++ b/src/box/lua/load_cfg.lua
@@ -861,6 +861,7 @@ local box_cfg_guard_whitelist = {
     txn_isolation_level = true;
     NULL = true;
     info = true;
+    iproto = true;
 };
 
 -- List of box members that requires full box loading.