diff --git a/avlos/templates/helpers.hpp.jinja b/avlos/templates/helpers.hpp.jinja
index e69a122..4428625 100644
--- a/avlos/templates/helpers.hpp.jinja
+++ b/avlos/templates/helpers.hpp.jinja
@@ -14,6 +14,7 @@
 #else
 #include <cstdint>
 #include <cstddef>
+#include <cstring>
 #endif
 
 #if defined ARDUINO