diff --git a/src/k_kart.c b/src/k_kart.c
index 41af9754..90743918 100644
--- a/src/k_kart.c
+++ b/src/k_kart.c
@@ -1460,6 +1460,9 @@ fixed_t K_GetKartSpeed(player_t *player, boolean doboostpower)
 	UINT8 kartspeed = player->kartspeed;
 	fixed_t finalspeed;
 
+	if (doboostpower && !player->kartstuff[k_pogospring] && !P_IsObjectOnGround(player->mo))
+		return (75*mapheaderinfo[gamemap-1]->mobj_scale); // air speed cap
+
 	switch (gamespeed)
 	{
 		case 0:
diff --git a/src/p_user.c b/src/p_user.c
index 106b3645..9d196268 100644
--- a/src/p_user.c
+++ b/src/p_user.c
@@ -4901,7 +4901,7 @@ static void P_3dMovement(player_t *player)
 	if (newMagnitude > K_GetKartSpeed(player, true)) //topspeed)
 	{
 		fixed_t tempmomx, tempmomy;
-		if (oldMagnitude > K_GetKartSpeed(player, true)) //topspeed)
+		if (oldMagnitude > K_GetKartSpeed(player, true) && onground) // SRB2Kart: onground check for air speed cap
 		{
 			if (newMagnitude > oldMagnitude)
 			{