diff --git a/generated/src/aws-cpp-sdk-s3/source/S3ExpressSignerProvider.cpp b/generated/src/aws-cpp-sdk-s3/source/S3ExpressSignerProvider.cpp
index 5ec13ec73ff..16d331a51d7 100644
--- a/generated/src/aws-cpp-sdk-s3/source/S3ExpressSignerProvider.cpp
+++ b/generated/src/aws-cpp-sdk-s3/source/S3ExpressSignerProvider.cpp
@@ -21,6 +21,7 @@ Aws::Auth::S3ExpressSignerProvider::S3ExpressSignerProvider(
         region,
         signingPolicy,
         urlEscapePath) {
+    m_signers.clear();
     m_signers.emplace_back(Aws::MakeShared<Aws::S3::S3ExpressSigner>(CLASS_TAG,
         S3ExpressIdentityProvider,
         credentialsProvider,
diff --git a/src/aws-cpp-sdk-core/source/client/AWSClient.cpp b/src/aws-cpp-sdk-core/source/client/AWSClient.cpp
index fca865607ce..96bf0ee78e9 100644
--- a/src/aws-cpp-sdk-core/source/client/AWSClient.cpp
+++ b/src/aws-cpp-sdk-core/source/client/AWSClient.cpp
@@ -194,6 +194,7 @@ void AWSClient::AppendToUserAgent(const Aws::String& valueToAppend)
 
 Aws::Client::AWSAuthSigner* AWSClient::GetSignerByName(const char* name) const
 {
+    std::cout<<"get signer "<<name<<std::endl;
     const auto& signer =  m_signerProvider->GetSigner(name);
     return signer ? signer.get() : nullptr;
 }
diff --git a/src/aws-cpp-sdk-core/source/client/AWSXmlClient.cpp b/src/aws-cpp-sdk-core/source/client/AWSXmlClient.cpp
index f1ac1793caa..ae9e980fc86 100644
--- a/src/aws-cpp-sdk-core/source/client/AWSXmlClient.cpp
+++ b/src/aws-cpp-sdk-core/source/client/AWSXmlClient.cpp
@@ -65,7 +65,8 @@ XmlOutcome AWSXMLClient::MakeRequest(const Aws::AmazonWebServiceRequest& request
             signerServiceNameOverride = endpoint.GetAttributes()->authScheme.GetSigningName()->c_str();
         }
     }
-    return MakeRequest(uri, request, method, signerName, signerRegionOverride, signerServiceNameOverride);
+    (void)signerName;
+    return MakeRequest(uri, request, method, "S3ExpressSigner", signerRegionOverride, signerServiceNameOverride);
 }
 
 XmlOutcome AWSXMLClient::MakeRequest(const Aws::Endpoint::AWSEndpoint& endpoint,
@@ -98,6 +99,7 @@ XmlOutcome AWSXMLClient::MakeRequest(const Aws::Http::URI& uri,
     const char* signerRegionOverride,
     const char* signerServiceNameOverride) const
 {
+    std::cout<<"MakeRequest signer "<<signerName<<std::endl;
     HttpResponseOutcome httpOutcome(BASECLASS::AttemptExhaustively(uri, request, method, signerName, signerRegionOverride, signerServiceNameOverride));
     if (!httpOutcome.IsSuccess())
     {