diff --git a/src/newgrf.cpp b/src/newgrf.cpp
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -6796,6 +6796,7 @@ static void ResetNewGRFData()
 	ResetIndustries();
 
 	/* Reset the objects. */
+	ObjectClass::Reset();
 	ResetObjects();
 
 	/* Reset station classes */