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-rw-r--r--train_cmd.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/train_cmd.c b/train_cmd.c
index 95bdd34cf..ffe1d6785 100644
--- a/train_cmd.c
+++ b/train_cmd.c
@@ -958,6 +958,8 @@ int32 CmdMoveRailVehicle(int x, int y, uint32 flags, uint32 p1, uint32 p2)
if (dst->next == NULL) {
/* It's the last one, so we will add the wagon just before the rear engine */
dst = GetPrevVehicleInChain(dst);
+ /* Now if the vehicle we want to link to is the vehicle itself, drop out */
+ if (dst == src) return CMD_ERROR;
// if dst is NULL, it means that dst got a rear multiheaded engine as first engine. We can't use that
if (dst == NULL) return CMD_ERROR;
} else {