diff --git a/P25Data.cpp b/P25Data.cpp
index 224ff83..bf355df 100644
--- a/P25Data.cpp
+++ b/P25Data.cpp
@@ -25,6 +25,7 @@
 
 #include <cstdio>
 #include <cassert>
+#include <cstring>
 
 const unsigned char DUMMY_HEADER[] = {
 	0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U,