diff --git a/src/p_user.c b/src/p_user.c
index c5f919c78..f920ba4a6 100644
--- a/src/p_user.c
+++ b/src/p_user.c
@@ -2075,7 +2075,19 @@ void P_SpawnThokMobj(player_t *player)
 
 	if (type == MT_GHOST)
 		mobj = P_SpawnGhostMobj(player->mo); // virtually does everything here for us
-	else
+	else if (type == MT_THOKEFFECT) // Thok boom effect for Sonic
+	{
+		mobj = P_SpawnMobjFromMobj(player->mo, 0, 0, player->mo->scale * 24, type);
+		mobj->angle = player->mo->angle + ANGLE_90;
+		mobj->fuse = 7;
+		mobj->scale = FRACUNIT / 3;
+		mobj->destscale = 10*FRACUNIT;
+		mobj->colorized = true;
+		mobj->color = player->mo->color;
+		mobj->momx = -player->mo->momx / 2;
+		mobj->momy = -player->mo->momy / 2;
+	}
+	else // Normal thok object handling
 	{
 		if (player->mo->eflags & MFE_VERTICALFLIP)
 			zheight = player->mo->z + player->mo->height + FixedDiv(P_GetPlayerHeight(player) - player->mo->height, 3*FRACUNIT) - FixedMul(mobjinfo[type].height, player->mo->scale);