diff --git a/tgstation.dme b/tgstation.dme
index 26ff920b796..432da285818 100644
--- a/tgstation.dme
+++ b/tgstation.dme
@@ -421,6 +421,7 @@
 #include "code\game\magic\cultist\ritual.dm"
 #include "code\game\magic\cultist\runes.dm"
 #include "code\game\magic\cultist\specialtalisman.dm"
+#include "code\game\mecha\construction_datum.dm"
 #include "code\game\mecha\global_iterator.dm"
 #include "code\game\mecha\mech_bay.dm"
 #include "code\game\mecha\mecha.dm"