diff --git a/src/openttd.cpp b/src/openttd.cpp
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -91,6 +91,7 @@ void IncreaseDate();
 void DoPaletteAnimations();
 void MusicLoop();
 void ResetMusic();
+void ResetOldNames();
 
 extern void SetDifficultyLevel(int mode, GameOptions *gm_opt);
 extern Player* DoStartupNewPlayer(bool is_ai);
@@ -1390,6 +1391,9 @@ bool AfterLoadGame()
 		}
 	}
 
+	/* From this point the old names array is cleared. */
+	ResetOldNames();
+
 	/* convert road side to my format. */
 	if (_opt.road_side) _opt.road_side = 1;