diff --git a/lib/param/loadparm.c b/lib/param/loadparm.c
index 488c47220ac..4885cffd73d 100644
--- a/lib/param/loadparm.c
+++ b/lib/param/loadparm.c
@@ -2238,6 +2238,8 @@ struct loadparm_context *loadparm_init(TALLOC_CTX *mem_ctx)
 
 	lpcfg_do_global_parameter(lp_ctx, "server schannel", "Auto");
 
+	lpcfg_do_global_parameter(lp_ctx, "short preserve case", "True");
+
 	for (i = 0; parm_table[i].label; i++) {
 		if (!(lp_ctx->flags[i] & FLAG_CMDLINE)) {
 			lp_ctx->flags[i] |= FLAG_DEFAULT;