diff --git a/sys/sys/joystick.h b/sys/sys/joystick.h
index 5afe82c0124b..6f2eb5bc2829 100644
--- a/sys/sys/joystick.h
+++ b/sys/sys/joystick.h
@@ -43,7 +43,7 @@ struct joystick {
 #define JOY_SETTIMEOUT    _IOW('J', 1, int)    /* set timeout */
 #define JOY_GETTIMEOUT    _IOR('J', 2, int)    /* get timeout */
 #define JOY_SET_X_OFFSET  _IOW('J', 3, int)    /* set offset on X-axis */
-#define JOY_SET_Y_OFFSET  _IOW('J', 4, int)    /* set offset on X-axis */
+#define JOY_SET_Y_OFFSET  _IOW('J', 4, int)    /* set offset on Y-axis */
 #define JOY_GET_X_OFFSET  _IOR('J', 5, int)    /* get offset on X-axis */
 #define JOY_GET_Y_OFFSET  _IOR('J', 6, int)    /* get offset on Y-axis */