diff --git a/README.md b/README.md
index 0a046c62..d77d1179 100644
--- a/README.md
+++ b/README.md
@@ -150,7 +150,7 @@ gcmBroker.OnNotificationFailed += (notification, aggregateEx) => {
 
 			Console.WriteLine ($"Device RegistrationId Expired: {oldId}");
 
-			if (!string.IsNullOrWhitespace (newId)) {
+			if (!string.IsNullOrWhiteSpace (newId)) {
 				// If this value isn't null, our subscription changed and we should update our database
 				Console.WriteLine ($"Device RegistrationId Changed To: {newId}");
 			}