diff --git a/1-js/02-first-steps/10-ifelse/4-check-login/task.md b/1-js/02-first-steps/10-ifelse/4-check-login/task.md
index 4b371a1d..1d12cb09 100644
--- a/1-js/02-first-steps/10-ifelse/4-check-login/task.md
+++ b/1-js/02-first-steps/10-ifelse/4-check-login/task.md
@@ -20,4 +20,6 @@ The schema:
 
 Please use nested `if` blocks. Mind the overall readability of the code.
 
+Hint: passing an empty input to a prompt returns an empty string `''`. Pressing `key:ESC` during a prompt returns `null`.
+
 [demo]