diff --git a/content/data-structures/chapter.tex b/content/data-structures/chapter.tex
index aca235d..11711d4 100644
--- a/content/data-structures/chapter.tex
+++ b/content/data-structures/chapter.tex
@@ -10,7 +10,6 @@ \chapter{Data structures}
 \kactlimport{Fenwick2dXor.h}
 \kactlimport{OrderStatisticTree.h}
 \kactlimport{HashMap.h}
-\kactlimport{LazySegmentTree.h}
 \kactlimport{DSU.h}
 \kactlimport{DSURollback.h}
 \kactlimport{PrefixSum2D.h}