diff --git a/gnss/2.1/IGnssMeasurement.hal b/gnss/2.1/IGnssMeasurement.hal
index 49ba7eb..d2c76e6 100644
--- a/gnss/2.1/IGnssMeasurement.hal
+++ b/gnss/2.1/IGnssMeasurement.hal
@@ -25,6 +25,7 @@
  * Extended interface for GNSS Measurements support.
  */
 interface IGnssMeasurement extends @2.0::IGnssMeasurement {
+
     /**
      * Initializes the interface and registers the callback routines with the HAL. After a
      * successful call to 'setCallback_2_1' the HAL must begin to provide updates at an average
@@ -46,5 +47,5 @@
      *     error code.
      */
     setCallback_2_1(IGnssMeasurementCallback callback, bool enableFullTracking)
-        generates (GnssMeasurementStatus initRet);
+         generates (GnssMeasurementStatus initRet);
 };