diff --git a/src/saveload/compat/engine_sl_compat.h b/src/saveload/compat/engine_sl_compat.h
new file mode 100644
--- /dev/null
+++ b/src/saveload/compat/engine_sl_compat.h
@@ -0,0 +1,48 @@
+/*
+ * This file is part of OpenTTD.
+ * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
+ * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @file engine_sl_compat.h Loading for engine chunks before table headers were added. */
+
+#ifndef SAVELOAD_COMPAT_ENGINE_H
+#define SAVELOAD_COMPAT_ENGINE_H
+
+#include "../saveload.h"
+
+/** Original field order for _engine_desc. */
+const SaveLoadCompat _engine_sl_compat[] = {
+	SLC_VAR("intro_date"),
+	SLC_VAR("age"),
+	SLC_VAR("reliability"),
+	SLC_VAR("reliability_spd_dec"),
+	SLC_VAR("reliability_start"),
+	SLC_VAR("reliability_max"),
+	SLC_VAR("reliability_final"),
+	SLC_VAR("duration_phase_1"),
+	SLC_VAR("duration_phase_2"),
+	SLC_VAR("duration_phase_3"),
+	SLC_NULL(1, SL_MIN_VERSION, SLV_121),
+	SLC_VAR("flags"),
+	SLC_NULL(1, SL_MIN_VERSION, SLV_179),
+	SLC_VAR("preview_asked"),
+	SLC_VAR("preview_company"),
+	SLC_VAR("preview_wait"),
+	SLC_NULL(1, SL_MIN_VERSION,  SLV_45),
+	SLC_VAR("company_avail"),
+	SLC_VAR("company_hidden"),
+	SLC_VAR("name"),
+	SLC_NULL(16, SLV_2, SLV_144),
+};
+
+/** Original field order for _engine_id_mapping_desc. */
+const SaveLoadCompat _engine_id_mapping_sl_compat[] = {
+	SLC_VAR("grfid"),
+	SLC_VAR("internal_id"),
+	SLC_VAR("type"),
+	SLC_VAR("substitute_id"),
+};
+
+#endif /* SAVELOAD_COMPAT_ENGINE_H */