diff --git a/src/BirdsiteLive.Twitter/TwitterUserService.cs b/src/BirdsiteLive.Twitter/TwitterUserService.cs
index 7fb6439..8505ed3 100644
--- a/src/BirdsiteLive.Twitter/TwitterUserService.cs
+++ b/src/BirdsiteLive.Twitter/TwitterUserService.cs
@@ -35,7 +35,7 @@ namespace BirdsiteLive.Twitter
         public TwitterUser GetUser(string username)
         {
             //Check if API is saturated 
-            if (IsUserApiRateLimited()) return null;
+            if (IsUserApiRateLimited()) throw new RateLimitExceededException();
 
             //Proceed to account retrieval
             _twitterAuthenticationInitializer.EnsureAuthenticationIsInitialized();