diff --git a/src/k_kart.c b/src/k_kart.c
index 957ee6564..39f731ea6 100644
--- a/src/k_kart.c
+++ b/src/k_kart.c
@@ -4480,7 +4480,7 @@ mobj_t *K_ThrowKartItem(player_t *player, boolean missile, mobjtype_t mapthing,
 			if (dir == -1 && mapthing != MT_SPB)
 			{
 				// Shoot backward
-				mo = K_SpawnKartMissile(player->mo, mapthing, player->mo->angle + ANGLE_180, 0, PROJSPEED*dir/8);
+				mo = K_SpawnKartMissile(player->mo, mapthing, player->mo->angle + ANGLE_180, 0, PROJSPEED*(-dir)/8);
 			}
 			else
 			{