diff --git a/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/StructureGenerator.java b/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/StructureGenerator.java
index e7e50f88d9b..24de405260e 100644
--- a/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/StructureGenerator.java
+++ b/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/StructureGenerator.java
@@ -174,8 +174,9 @@ private void renderStructureNamespace(StructuredMemberWriter structuredMemberWri
     }
 
     /**
-     * Error structures generate interfaces that extend from SmithyException
-     * and add the appropriate fault property.
+     * Error structures generate classes that extend from ServiceException
+     * (SmithyException is case of server SDK), and add the appropriate fault
+     * property.
      *
      * <p>Given the following Smithy structure:
      *
@@ -192,8 +193,10 @@ private void renderStructureNamespace(StructuredMemberWriter structuredMemberWri
      * <p>The following TypeScript is generated:
      *
      * <pre>{@code
-     * import { ServiceException as __BaseException } from "@aws-sdk/smithy-client";
      * import { ExceptionOptionType as __ExceptionOptionType } from "@aws-sdk/smithy-client";
+     * import { ServiceException as __BaseException } from "@aws-sdk/smithy-client";
+     * // In server SDK:
+     * // import { SmithyException as __BaseException } from "@aws-smithy/server-common";
      *
      * export class NoSuchResource extends __BaseException {
      *   name: "NoSuchResource";
diff --git a/smithy-typescript-ssdk-libs/server-common/src/errors.ts b/smithy-typescript-ssdk-libs/server-common/src/errors.ts
index f0f6f4e35e8..2c320f38a4b 100644
--- a/smithy-typescript-ssdk-libs/server-common/src/errors.ts
+++ b/smithy-typescript-ssdk-libs/server-common/src/errors.ts
@@ -41,57 +41,52 @@ export const isFrameworkException = (error: any): error is SmithyFrameworkExcept
   return error.$frameworkError;
 };
 
-export class InternalFailureException extends SmithyException {
+/**
+ * @internal
+ */
+export class InternalFailureException {
   readonly name = "InternalFailure";
   readonly $fault = "server";
   readonly statusCode = 500;
   readonly $frameworkError = true;
-  constructor() {
-    super({ name: "InternalFailure", $fault: "server" });
-    Object.setPrototypeOf(this, InternalFailureException.prototype);
-  }
 }
 
-export class UnknownOperationException extends SmithyException {
+/**
+ * @internal
+ */
+export class UnknownOperationException {
   readonly name = "UnknownOperationException";
   readonly $fault = "client";
   readonly statusCode = 404;
   readonly $frameworkError = true;
-  constructor() {
-    super({ name: "UnknownOperationException", $fault: "client" });
-    Object.setPrototypeOf(this, UnknownOperationException.prototype);
-  }
 }
 
-export class SerializationException extends SmithyException {
+/**
+ * @internal
+ */
+export class SerializationException {
   readonly name = "SerializationException";
   readonly $fault = "client";
   readonly statusCode = 400;
   readonly $frameworkError = true;
-  constructor() {
-    super({ name: "SerializationException", $fault: "client" });
-    Object.setPrototypeOf(this, SerializationException.prototype);
-  }
 }
 
-export class UnsupportedMediaTypeException extends SmithyException {
+/**
+ * @internal
+ */
+export class UnsupportedMediaTypeException {
   readonly name = "UnsupportedMediaTypeException";
   readonly $fault = "client";
   readonly statusCode = 415;
   readonly $frameworkError = true;
-  constructor() {
-    super({ name: "UnsupportedMediaTypeException", $fault: "client" });
-    Object.setPrototypeOf(this, UnsupportedMediaTypeException.prototype);
-  }
 }
 
-export class NotAcceptableException extends SmithyException {
+/**
+ * @internal
+ */
+export class NotAcceptableException {
   readonly name = "NotAcceptableException";
   readonly $fault = "client";
   readonly statusCode = 406;
   readonly $frameworkError = true;
-  constructor() {
-    super({ name: "NotAcceptableException", $fault: "client" });
-    Object.setPrototypeOf(this, NotAcceptableException.prototype);
-  }
 }