diff --git a/src/newgrf_railtype.cpp b/src/newgrf_railtype.cpp
--- a/src/newgrf_railtype.cpp
+++ b/src/newgrf_railtype.cpp
@@ -139,7 +139,7 @@ SpriteID GetCustomSignalSprite(const Rai
 uint8 GetReverseRailTypeTranslation(RailType railtype, const GRFFile *grffile)
 {
 	/* No rail type table present, return rail type as-is */
-	if (grffile == NULL || grffile->railtype_list.Length() == 0) return railtype;
+	if (grffile == NULL || grffile->railtype_list.size() == 0) return railtype;
 
 	/* Look for a matching rail type label in the table */
 	RailTypeLabel label = GetRailTypeInfo(railtype)->label;