diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 375db3e9b6..3d36de261e 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -4255,6 +4255,7 @@ static ChangeInfoResult IgnoreObjectProperty(uint prop, ByteReader *buf)
 		case 0x14:
 		case 0x16:
 		case 0x17:
+		case 0x18:
 			buf->ReadByte();
 			break;