diff --git a/sm/gpgsm.c b/sm/gpgsm.c
index 3331537b1..5e3e0f2d9 100644
--- a/sm/gpgsm.c
+++ b/sm/gpgsm.c
@@ -1065,6 +1065,7 @@ main ( int argc, char **argv)
 
         case oDefaultKey:
           /* fixme:opt.def_secret_key = pargs.r.ret_str;*/
+          log_info ("WARNING: --default-key has not yet been implemented\n");
           break;
         case oDefRecipient:
           if (*pargs.r.ret_str)