diff --git a/generated/src/aws-cpp-sdk-qbusiness/include/aws/qbusiness/model/ChatInputStream.h b/generated/src/aws-cpp-sdk-qbusiness/include/aws/qbusiness/model/ChatInputStream.h
index b1cacc246f2..fddf72b7c67 100644
--- a/generated/src/aws-cpp-sdk-qbusiness/include/aws/qbusiness/model/ChatInputStream.h
+++ b/generated/src/aws-cpp-sdk-qbusiness/include/aws/qbusiness/model/ChatInputStream.h
@@ -35,7 +35,7 @@ namespace Model
     {
        Aws::Utils::Event::Message msg;
        msg.InsertEventHeader(":message-type", Aws::String("event"));
-       msg.InsertEventHeader(":event-type", Aws::String("ConfigurationEvent"));
+       msg.InsertEventHeader(":event-type", Aws::String("configurationEvent"));
        msg.InsertEventHeader(":content-type", Aws::String("application/json"));
        msg.WriteEventPayload(value.Jsonize().View().WriteCompact());
        WriteEvent(msg);
@@ -45,7 +45,7 @@ namespace Model
     {
        Aws::Utils::Event::Message msg;
        msg.InsertEventHeader(":message-type", Aws::String("event"));
-       msg.InsertEventHeader(":event-type", Aws::String("TextInputEvent"));
+       msg.InsertEventHeader(":event-type", Aws::String("textEvent"));
        msg.InsertEventHeader(":content-type", Aws::String("text/plain"));
        msg.WriteEventPayload(value.GetUserMessage());
        WriteEvent(msg);
@@ -55,7 +55,7 @@ namespace Model
     {
        Aws::Utils::Event::Message msg;
        msg.InsertEventHeader(":message-type", Aws::String("event"));
-       msg.InsertEventHeader(":event-type", Aws::String("AttachmentInputEvent"));
+       msg.InsertEventHeader(":event-type", Aws::String("attachmentEvent"));
        msg.InsertEventHeader(":content-type", Aws::String("application/json"));
        msg.WriteEventPayload(value.Jsonize().View().WriteCompact());
        WriteEvent(msg);
@@ -65,7 +65,7 @@ namespace Model
     {
        Aws::Utils::Event::Message msg;
        msg.InsertEventHeader(":message-type", Aws::String("event"));
-       msg.InsertEventHeader(":event-type", Aws::String("ActionExecutionEvent"));
+       msg.InsertEventHeader(":event-type", Aws::String("actionExecutionEvent"));
        msg.InsertEventHeader(":content-type", Aws::String("application/json"));
        msg.WriteEventPayload(value.Jsonize().View().WriteCompact());
        WriteEvent(msg);
@@ -75,7 +75,7 @@ namespace Model
     {
        Aws::Utils::Event::Message msg;
        msg.InsertEventHeader(":message-type", Aws::String("event"));
-       msg.InsertEventHeader(":event-type", Aws::String("EndOfInputEvent"));
+       msg.InsertEventHeader(":event-type", Aws::String("endOfInputEvent"));
        AWS_UNREFERENCED_PARAM(value);
        WriteEvent(msg);
        return *this;
@@ -84,7 +84,7 @@ namespace Model
     {
        Aws::Utils::Event::Message msg;
        msg.InsertEventHeader(":message-type", Aws::String("event"));
-       msg.InsertEventHeader(":event-type", Aws::String("AuthChallengeResponseEvent"));
+       msg.InsertEventHeader(":event-type", Aws::String("authChallengeResponseEvent"));
        msg.InsertEventHeader(":content-type", Aws::String("application/json"));
        msg.WriteEventPayload(value.Jsonize().View().WriteCompact());
        WriteEvent(msg);
diff --git a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/json/EventStreamHeader.vm b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/json/EventStreamHeader.vm
index 54bdc7d41aa..aac66739df0 100644
--- a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/json/EventStreamHeader.vm
+++ b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/json/EventStreamHeader.vm
@@ -50,7 +50,7 @@ namespace Model
        Aws::Utils::Event::Message msg;
 #if(!$entry.value.shape.eventPayloadType.equals("blob"))
        msg.InsertEventHeader(":message-type", Aws::String("event"));
-       msg.InsertEventHeader(":event-type", Aws::String("${entry.value.shape.name}"));
+       msg.InsertEventHeader(":event-type", Aws::String("${entry.key}"));
 #if($entry.value.shape.eventPayloadType.equals("string"))
        msg.InsertEventHeader(":content-type", Aws::String("text/plain"));
        msg.WriteEventPayload(value.Get$CppViewHelper.capitalizeFirstChar(${entry.value.shape.eventPayloadMemberName})());
@@ -64,7 +64,7 @@ namespace Model
        if(!value.Get$CppViewHelper.capitalizeFirstChar(${entry.value.shape.eventPayloadMemberName})().empty())
        {
            msg.InsertEventHeader(":message-type", Aws::String("event"));
-           msg.InsertEventHeader(":event-type", Aws::String("${entry.value.shape.name}"));
+           msg.InsertEventHeader(":event-type", Aws::String("${entry.key}"));
            msg.InsertEventHeader(":content-type", Aws::String("application/octet-stream"));
            msg.WriteEventPayload(value.Get$CppViewHelper.capitalizeFirstChar(${entry.value.shape.eventPayloadMemberName})());
        }