Water dripping from headlight adjustment hole

[Denis Yuliyanov]

Recently I noticed that when it rains, water passes between the fender and the body and flows onto the cooler through the hole in the headlight adjustment.The question is, is it normal for it to drip there or is there something that im missing.The car is leon 1m

 

[Alexis27]

It's a bit of a design flaw. Water can get through there and it kept blowing the indicator bulb on mine.
You can stick some butyl tape down there.

 

[Denis Yuliyanov]

It's a bit of a design flaw. Water can get through there and it kept blowing the indicator bulb on mine.
You can stick some butyl tape down there.

I was thinking of putting some kind of rubber plug there but I can't figure out the size of the hole. I think if I stick something there it will come off in the water. And anyway, this hole is for the headlight adjustment and will be needed at some point. Can you show me how you make it on your car