diff --git a/src/kernel_internals/runtime/system_config.ml.in b/src/kernel_internals/runtime/system_config.ml.in
index 874ba2784e4bafd506b17874e1694eb7ba4f97f2..2b7603df5668b699624ab649e439058fe9cfc5dc 100644
--- a/src/kernel_internals/runtime/system_config.ml.in
+++ b/src/kernel_internals/runtime/system_config.ml.in
@@ -62,6 +62,7 @@ module Plugins = struct
         try
           load p
         with e ->
+          (* We don't have access to Kernel's log mechanisms here. *)
           Format.printf "Warning: failed to load plugin '%s' (exception: %s)@."
             p (Printexc.to_string e);
           Format.printf "         Try recompiling it or \