diff --git a/flutter_appauth/README.md b/flutter_appauth/README.md
index 3a36939..a3f367c 100644
--- a/flutter_appauth/README.md
+++ b/flutter_appauth/README.md
@@ -176,7 +176,7 @@ android {
     defaultConfig {
         ...
         manifestPlaceholders += [
-                'appAuthRedirectScheme': '<your_custom_scheme>'
+                appAuthRedirectScheme: '<your_custom_scheme>'
         ]
     }
 }