diff --git a/src/header.h b/src/header.h
index 843a099..70ae84b 100644
--- a/src/header.h
+++ b/src/header.h
@@ -35,6 +35,7 @@
 #include <stdlib.h>
 #include <signal.h>
 #include <string>
+#include <string.h>
 #include <unistd.h>
 #include <termios.h>
 #include <pthread.h>