diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index e7ec8493be..3eaa81ba45 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -73,7 +73,7 @@
         <activity android:name=".plugins.pump.danaRS.activities.PairingHelperActivity" />
         <activity android:name=".activities.HistoryBrowseActivity" />
 
-        <!-- Receive new BG readings from other local aaps -->
+        <!-- Receive new BG readings from other local apps -->
         <receiver
                 android:name=".receivers.DataReceiver"
                 android:enabled="true"
diff --git a/app/src/main/java/info/nightscout/androidaps/receivers/SmsReceiver.java b/app/src/main/java/info/nightscout/androidaps/receivers/SmsReceiver.java
index 5a0cb6a803..f527375349 100644
--- a/app/src/main/java/info/nightscout/androidaps/receivers/SmsReceiver.java
+++ b/app/src/main/java/info/nightscout/androidaps/receivers/SmsReceiver.java
@@ -1,3 +1,7 @@
 package info.nightscout.androidaps.receivers;
 
+/**
+ * Forward received SMS intents. This is a separate class, because unlike local broadcasts handled by DataReceiver,
+ * receiving SMS requires a special permission in the manifest, which necessitates a separate receiver.
+ */
 public class SmsReceiver extends DataReceiver {}