diff --git a/broadcastradio/aidl/android/hardware/broadcastradio/AlertUrgency.aidl b/broadcastradio/aidl/android/hardware/broadcastradio/AlertUrgency.aidl
index a0ef4a9..c7bfdbc 100644
--- a/broadcastradio/aidl/android/hardware/broadcastradio/AlertUrgency.aidl
+++ b/broadcastradio/aidl/android/hardware/broadcastradio/AlertUrgency.aidl
@@ -46,7 +46,7 @@
     PAST,
 
     /**
-     * Unknown rgency.
+     * Unknown urgency.
      */
     UNKNOWN,
 }
diff --git a/broadcastradio/aidl/android/hardware/broadcastradio/Coordinate.aidl b/broadcastradio/aidl/android/hardware/broadcastradio/Coordinate.aidl
index b881534..9c9680b 100644
--- a/broadcastradio/aidl/android/hardware/broadcastradio/Coordinate.aidl
+++ b/broadcastradio/aidl/android/hardware/broadcastradio/Coordinate.aidl
@@ -34,7 +34,7 @@
     /**
      * Longitude of the cooridinate.
      *
-     * <p>Longitude is in the range of -90 to 90.
+     * <p>Longitude is in the range of -180 to 180.
      */
     double longitude;
 }
diff --git a/broadcastradio/aidl/android/hardware/broadcastradio/Geocode.aidl b/broadcastradio/aidl/android/hardware/broadcastradio/Geocode.aidl
index f0162ca..ca98154 100644
--- a/broadcastradio/aidl/android/hardware/broadcastradio/Geocode.aidl
+++ b/broadcastradio/aidl/android/hardware/broadcastradio/Geocode.aidl
@@ -17,9 +17,10 @@
 package android.hardware.broadcastradio;
 
 /**
- * Geographic code reprensenting location in alert message
+ * Geographic code reprensenting location in alert message.
  *
- * <p>(see ITU-T X.1303 bis for more info).
+ * <p>Geocode is mainly for information display instead of parsing on radio application side. See
+ * ITU-T X.1303 bis for more info.
  */
 @VintfStability
 @JavaDerive(equals=true, toString=true)