diff --git a/UMP.cpp b/UMP.cpp
index a5bdf6a..2a8cd47 100644
--- a/UMP.cpp
+++ b/UMP.cpp
@@ -23,6 +23,7 @@
 
 #include <cstdio>
 #include <cassert>
+#include <cstring>
 
 const unsigned char UMP_FRAME_START  = 0xF0U;