diff --git a/src/saveload/engine_sl.cpp b/src/saveload/engine_sl.cpp
--- a/src/saveload/engine_sl.cpp
+++ b/src/saveload/engine_sl.cpp
@@ -149,7 +149,7 @@ static void Load_EIDS()
 }
 
 extern const ChunkHandler _engine_chunk_handlers[] = {
-	{ 'EIDS', Save_EIDS, Load_EIDS, NULL, CH_ARRAY          },
-	{ 'ENGN', Save_ENGN, Load_ENGN, NULL, CH_ARRAY          },
-	{ 'ENGS', NULL,      Load_ENGS, NULL, CH_RIFF | CH_LAST },
+	{ 'EIDS', Save_EIDS, Load_EIDS, NULL, NULL, CH_ARRAY          },
+	{ 'ENGN', Save_ENGN, Load_ENGN, NULL, NULL, CH_ARRAY          },
+	{ 'ENGS', NULL,      Load_ENGS, NULL, NULL, CH_RIFF | CH_LAST },
 };