Never make the same mistake i just did..

So, I have a nether world generator.. however, I made a bit of an error in here, i'll leave it for anyone to spot:

Code:

for(int x = 0; x<16;x++)
            {
                for(int z = 0; z<16;z++)
                {
                    if(inCircle(centercircle,circleradius,new Location(w,x,actualstartheight,z)));
                    {
                        int heighttoplace = getLowestY(x,actualstartheight,z,src);
                        if(heighttoplace != -1)
                        {
                        src.getBlock(x,heighttoplace,z).setType(Material.SOUL_SAND);
                        src.getBlock(x,heighttoplace+1,z).setType(Material.NETHER_WARTS);
                        }
                    }
                }
            }

If you can spot the error, kudos to you! Don't make the mistake as me