diff --git a/src/tz/io/ttf.cpp b/src/tz/io/ttf.cpp
index 43c8aa9c1e..d5805a94f7 100644
--- a/src/tz/io/ttf.cpp
+++ b/src/tz/io/ttf.cpp
@@ -3,6 +3,7 @@
 #include "tz/core/profile.hpp"
 #include <fstream>
 #include <cstdio>
+#include <cstring>
 
 namespace tz::io
 {