diff --git a/input/drivers/udev_input.c b/input/drivers/udev_input.c
index fb06c90cb3..b168eb9293 100644
--- a/input/drivers/udev_input.c
+++ b/input/drivers/udev_input.c
@@ -29,6 +29,7 @@
 #include <linux/kd.h>
 #include <termios.h>
 #include <signal.h>
+#include <unistd.h>
 
 #include <file/file_path.h>