diff --git a/src/k_roulette.c b/src/k_roulette.c
index 505c85221..4efa164a4 100644
--- a/src/k_roulette.c
+++ b/src/k_roulette.c
@@ -73,6 +73,7 @@
 #define ROULETTE_SPEED_FASTEST (2)
 #define ROULETTE_SPEED_DIST (150*DISTVAR)
 #define ROULETTE_SPEED_TIMEATTACK (9)
+#define ROULETTE_SPEED_VERSUS_SLOWEST (12)
 
 static UINT8 K_KartItemOddsRace[NUMKARTRESULTS-1][8] =
 {
@@ -1135,6 +1136,14 @@ static void K_CalculateRouletteSpeed(itemroulette_t *const roulette)
 	fixed_t progress = 0;
 	fixed_t total = 0;
 
+	if (bossinfo.valid == true)
+	{
+		// Boss in action, use a speed controlled by boss health
+		total = FixedDiv(bossinfo.healthbar, BOSSHEALTHBARLEN);
+		roulette->tics = roulette->speed = ROULETTE_SPEED_FASTEST + FixedMul(ROULETTE_SPEED_VERSUS_SLOWEST - ROULETTE_SPEED_FASTEST, total);
+		return;
+	}
+
 	if (K_TimeAttackRules() == true)
 	{
 		// Time Attack rules; use a consistent speed.