diff --git a/ARDOPCommonCode/LinSerial.c b/ARDOPCommonCode/LinSerial.c
index deb6893..a33718a 100644
--- a/ARDOPCommonCode/LinSerial.c
+++ b/ARDOPCommonCode/LinSerial.c
@@ -19,6 +19,7 @@
 #include <errno.h>
 #include <stdio.h>
 #include <unistd.h>
+#include <string.h>
 
 //#include "ARDOPC.h"
 
@@ -328,4 +329,4 @@ void CatWrite(char * Buffer, int Len)
 	WriteDebugLog(5, "CAT Write Len %d %s", Len, Buffer);
 	if (hCATDevice)
 		WriteCOMBlock(hCATDevice, Buffer, Len);
-}
\ No newline at end of file
+}