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-rw-r--r--src/newgrf.cpp10
1 files changed, 8 insertions, 2 deletions
diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index f56b99899..848903324 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -1618,9 +1618,15 @@ static ChangeInfoResult AircraftVehicleChangeInfo(uint engine, int numinfo, int
avi->max_speed = (buf->ReadByte() * 128) / 10;
break;
- case 0x0D: // Acceleration
- avi->acceleration = (buf->ReadByte() * 128) / 10;
+ case 0x0D: { // Acceleration
+ uint acceleration = (buf->ReadByte() * 128) / 10;
+ if (acceleration > UINT8_MAX) {
+ grfmsg(1, "Acceleration property of aircraft %d is too big.", engine + i);
+ acceleration = UINT8_MAX;
+ }
+ avi->acceleration = acceleration;
break;
+ }
case PROP_AIRCRAFT_RUNNING_COST_FACTOR: // 0x0E Running cost factor
avi->running_cost = buf->ReadByte();