diff --git a/amazonka-rds.cabal b/amazonka-rds.cabal
--- a/amazonka-rds.cabal
+++ b/amazonka-rds.cabal
@@ -1,5 +1,5 @@
 name:                  amazonka-rds
-version:               0.3.4
+version:               0.3.5
 synopsis:              Amazon Relational Database Service SDK.
 homepage:              https://github.com/brendanhay/amazonka
 license:               OtherLicense
@@ -101,5 +101,5 @@
     other-modules:
 
     build-depends:
-          amazonka-core == 0.3.4.*
+          amazonka-core == 0.3.5.*
         , base          >= 4.7     && < 5
diff --git a/gen/Network/AWS/RDS/Types.hs b/gen/Network/AWS/RDS/Types.hs
--- a/gen/Network/AWS/RDS/Types.hs
+++ b/gen/Network/AWS/RDS/Types.hs
@@ -496,7 +496,7 @@
               -> RESTError
               -> Bool
         check (statusCode -> s) (awsErrorCode -> e)
-            | s == 400 && "Throttling" == e = True -- Throttling
+            | s == 400 && (Just "Throttling") == e = True -- Throttling
             | s == 500  = True -- General Server Error
             | s == 509  = True -- Limit Exceeded
             | s == 503  = True -- Service Unavailable
