diff --git a/src/cargopacket.cpp b/src/cargopacket.cpp
index 848cae1c84..e79de1e14b 100644
--- a/src/cargopacket.cpp
+++ b/src/cargopacket.cpp
@@ -68,7 +68,7 @@ CargoPacket::CargoPacket(StationID source, TileIndex source_xy, uint16 count, So
  * @note We have to zero memory ourselves here because we are using a 'new'
  * that, in contrary to all other pools, does not memset to 0.
  */
-CargoPacket::CargoPacket(uint16 count, byte days_in_transit, StationID source, TileIndex source_xy, TileIndex loaded_at_xy, Money feeder_share, SourceType source_type, SourceID source_id) :
+CargoPacket::CargoPacket(uint16 count, uint16 days_in_transit, StationID source, TileIndex source_xy, TileIndex loaded_at_xy, Money feeder_share, SourceType source_type, SourceID source_id) :
 		feeder_share(feeder_share),
 		count(count),
 		days_in_transit(days_in_transit),
diff --git a/src/cargopacket.h b/src/cargopacket.h
index 384e3785c7..9aacfed57c 100644
--- a/src/cargopacket.h
+++ b/src/cargopacket.h
@@ -66,7 +66,7 @@ public:
 
 	CargoPacket();
 	CargoPacket(StationID source, TileIndex source_xy, uint16 count, SourceType source_type, SourceID source_id);
-	CargoPacket(uint16 count, byte days_in_transit, StationID source, TileIndex source_xy, TileIndex loaded_at_xy, Money feeder_share = 0, SourceType source_type = SourceType::Industry, SourceID source_id = INVALID_SOURCE);
+	CargoPacket(uint16 count, uint16 days_in_transit, StationID source, TileIndex source_xy, TileIndex loaded_at_xy, Money feeder_share = 0, SourceType source_type = SourceType::Industry, SourceID source_id = INVALID_SOURCE);
 
 	/** Destroy the packet. */
 	~CargoPacket() { }