diff --git a/README.md b/README.md
index e7060f3..bbf95c3 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,10 @@ Groovy:
 plugins {
     id 'com.google.android.libraries.mapsplatform.secrets-gradle-plugin'
 }
+
+buildFeatures {
+    buildConfig true // make sure this is set
+}
 ```
 
 Kotlin:
@@ -52,6 +56,10 @@ Kotlin:
 plugins {
     id("com.google.android.libraries.mapsplatform.secrets-gradle-plugin")
 }
+
+buildFeatures {
+    buildConfig(true) // make sure this is set
+}
 ```
 
 This plugin also supports library module type (`com.android.library`). Just install the plugin in your library-level `build.gradle` file and keys will be visible inside that module as well.