diff --git a/include/nuttx/sensors/sensor.h b/include/nuttx/sensors/sensor.h
index 02fb26962b..54a55895ff 100644
--- a/include/nuttx/sensors/sensor.h
+++ b/include/nuttx/sensors/sensor.h
@@ -676,7 +676,7 @@ struct sensor_ops_s
    **************************************************************************/
 
   CODE int (*selftest)(FAR struct sensor_lowerhalf_s *lower,
-                        unsigned long arg);
+                       unsigned long arg);
 
   /**************************************************************************
    * Name: set_calibvalue