diff --git a/WearOS/Wearable/build.gradle.kts b/WearOS/Wearable/build.gradle.kts
index f62d6c0d..41327142 100644
--- a/WearOS/Wearable/build.gradle.kts
+++ b/WearOS/Wearable/build.gradle.kts
@@ -65,5 +65,13 @@ dependencies {
 // [END maps_wear_os_dependencies]
 
 secrets {
+    // To add your Maps API key to this project:
+    // 1. If the secrets.properties file does not exist, create it in the same folder as the local.properties file.
+    // 2. Add this line, where YOUR_API_KEY is your API key:
+    //        MAPS_API_KEY=YOUR_API_KEY
+    propertiesFileName = "secrets.properties"
+
+    // A properties file containing default secret values. This file can be
+    // checked in version control.
     defaultPropertiesFileName = "local.defaults.properties"
 }
diff --git a/WearOS/Wearable/src/main/AndroidManifest.xml b/WearOS/Wearable/src/main/AndroidManifest.xml
index 26a97f48..b4935379 100644
--- a/WearOS/Wearable/src/main/AndroidManifest.xml
+++ b/WearOS/Wearable/src/main/AndroidManifest.xml
@@ -27,7 +27,7 @@
 
         <!-- API key for the Android Maps API v2. The value is defined in local.properties. -->
         <meta-data android:name="com.google.android.geo.API_KEY"
-                   android:value="${GOOGLE_MAPS_API_KEY}"/>
+                   android:value="${MAPS_API_KEY}"/>
         <meta-data
             android:name="com.google.android.wearable.standalone"
             android:value="true" />
diff --git a/WearOS/local.defaults.properties b/WearOS/local.defaults.properties
index 28774a04..995b0da5 100644
--- a/WearOS/local.defaults.properties
+++ b/WearOS/local.defaults.properties
@@ -1 +1 @@
-GOOGLE_MAPS_API_KEY=DEFAULT_API_KEY
+MAPS_API_KEY=DEFAULT_API_KEY