diff --git a/src/gamedata/r_defs.h b/src/gamedata/r_defs.h
index 4c95a0424..6cb8f9e77 100644
--- a/src/gamedata/r_defs.h
+++ b/src/gamedata/r_defs.h
@@ -522,6 +522,12 @@ struct FLinkedSector
 {
 	sector_t *Sector;
 	int Type;
+	
+	FLinkedSector(sector_t *sector = nullptr, int type = 0)
+	: Sector(sector)
+	, Type(type)
+	{
+	}
 };