Current node shall not appear in block-view listing

Hi all,

as a feature I randomly list three posts below a current post.
I do that in a block, which displays teasers, generated by a view.

Problem: sometimes the current post appears also in my teaser-block,
which makes no sense.

The question: how can I filter my view in order to avoid this problem?

Idea: can I indicate in the “Filter Criteria” of my view, the current node
not to be displayed? And how can I do that?

Many many thanks!

Cheers
Soezkan

Drupal version: 


Source: https://www.drupal.org/taxonomy/term/22/feed