diff --git a/src/economy.cpp b/src/economy.cpp
--- a/src/economy.cpp
+++ b/src/economy.cpp
@@ -440,7 +440,7 @@ void ChangeOwnershipOfPlayerItems(Player
 					TrackBits tracks = GetTrackBits(tile);
 					do { // there may be two tracks with signals for TRACK_BIT_HORZ and TRACK_BIT_VERT
 						Track track = RemoveFirstTrack(&tracks);
-						if (HasSignalOnTrack(tile, track)) SetSignalsOnBothDir(tile, track);
+						if (HasSignalOnTrack(tile, track)) SetSignalsOnBothDir(tile, track, new_player);
 					} while (tracks != TRACK_BIT_NONE);
 				}
 			} while (++tile != MapSize());