diff --git a/arcam-av/arcam_av.c b/arcam-av/arcam_av.c
index 63f9b4e..29fc537 100644
--- a/arcam-av/arcam_av.c
+++ b/arcam-av/arcam_av.c
@@ -27,6 +27,7 @@
 #include <signal.h>
 #include <stddef.h>
 #include <stdio.h>
+#include <string.h>
 #include <termios.h>
 #include <unistd.h>