diff --git a/tools/x_decompress/x_decompress.cpp b/tools/x_decompress/x_decompress.cpp
index a1bc4478..211ec48a 100644
--- a/tools/x_decompress/x_decompress.cpp
+++ b/tools/x_decompress/x_decompress.cpp
@@ -1,6 +1,7 @@
 #include <algorithm>
 #include <cstdint>
 #include <cstddef>
+#include <cstring>
 #include <vector>
 #include <fstream>
 #include <cassert>