diff --git a/src/windows/ride.c b/src/windows/ride.c
index 08c7ebe78d..3abcfcf279 100644
--- a/src/windows/ride.c
+++ b/src/windows/ride.c
@@ -3057,6 +3057,7 @@ static void window_ride_operating_invalidate()
 		break;
 	case RIDE_MODE_STATION_TO_STATION:
 		RCT2_GLOBAL(0x013CE964, uint16) = (ride->var_0D0 * 9) / 4;
+		format = 1331;
 		caption = STR_SPEED;
 		tooltip = STR_SPEED_TIP;
 		break;