diff --git a/docs/books/sed_awk_grep/1_regular_expressions_vs_wildcards.uk.md b/docs/books/sed_awk_grep/1_regular_expressions_vs_wildcards.uk.md
index 46daa9e830..23d8d204d9 100644
--- a/docs/books/sed_awk_grep/1_regular_expressions_vs_wildcards.uk.md
+++ b/docs/books/sed_awk_grep/1_regular_expressions_vs_wildcards.uk.md
@@ -151,7 +151,6 @@ ERE також підтримує символи зі спеціальними 
 
 - [regex101](https://regex101.com/)
 - [oschina](https://tool.oschina.net/regex/)
-- [oktools](https://oktools.net/regex)
 - [regexr](https://regexr.com/)
 - [regelearn](https://regexlearn.com/)
 - [coding](https://coding.tools/regex-tester)