diff --git a/interview/sections/system-design-perfomance-testing.md b/interview/sections/system-design-perfomance-testing.md
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--- a/interview/sections/system-design-perfomance-testing.md
+++ b/interview/sections/system-design-perfomance-testing.md
@@ -7,7 +7,6 @@
 ### Книги:
 - [Systems Performance 2nd Edition](https://www.amazon.com/Systems-Performance-Brendan-Gregg/dp/0136820158/ref=as_li_ss_tl?ie=UTF8&linkCode=sl1&tag=deirdrestraug-20&linkId=815ef3388ba65b674f4f8fd582713f24&language=en_US) / Brendan D. Gregg
 - [The Art of Application Performance Testing, 2nd Edition](https://www.oreilly.com/library/view/the-art-of/9781491900536/) / Ian Molyneaux
-- [Foundation Level Specialist Syllabus Performance Testing](https://www.istqb.org/documents/ISTQB%20CTFL-PT%20Syllabus%202018%20GA.pdf) / ISTQB
 - [Глоссарий терминов тестирования RSTQB](https://www.rstqb.org/ru/istqb-downloads.html?file=files/content/rstqb/downloads/ISTQB%20Downloads/ISTQB%20Глоссарий%20Терминов%20Тестирования%202.3.pdf) / RSTQB
 
 ### Github: