diff -r 7a95180d84da NML/PART.nml
--- a/NML/PART.nml	Wed Dec 27 20:52:39 2017 +0100
+++ b/NML/PART.nml	Wed Dec 27 21:26:31 2017 +0100
@@ -248,7 +248,7 @@
     //engine_class:         ENGINE_CLASS_STEAM;
     //running_cost_base:    RUNNING_COST_STEAM;
     //visual_effect_and_powered: visual_effect_and_powered(1,2,DISABLE_WAGON_POWER);
-    misc_flags:           TRAIN_FLAG_SPRITE_STACK;
+    misc_flags:           bitmask(TRAIN_FLAG_SPRITE_STACK);
 
     length:               8;
     dual_headed:          0;