diff --git a/Sources/Core/AWSClientRuntime/Sources/AWSClientRuntime/Protocols/RpcV2Cbor/RpcV2CborError.swift b/Sources/Core/AWSClientRuntime/Sources/AWSClientRuntime/Protocols/RpcV2Cbor/RpcV2CborError.swift
index 70dab70ed49..6ec5b545992 100644
--- a/Sources/Core/AWSClientRuntime/Sources/AWSClientRuntime/Protocols/RpcV2Cbor/RpcV2CborError.swift
+++ b/Sources/Core/AWSClientRuntime/Sources/AWSClientRuntime/Protocols/RpcV2Cbor/RpcV2CborError.swift
@@ -47,6 +47,7 @@ public struct RpcV2CborError: BaseError {
     }
 }
 
+// support awsQueryCompatible trait
 extension RpcV2CborError {
     @_spi(SmithyReadWrite)
     public static func makeQueryCompatibleError(
@@ -64,22 +65,3 @@ extension RpcV2CborError {
         )
     }
 }
-
-// support awsQueryCompatible trait
-extension AWSJSONError {
-    @_spi(SmithyReadWrite)
-    public static func makeQueryCompatibleAWSJsonError(
-        httpResponse: HTTPResponse,
-        responseReader: Reader,
-        noErrorWrapping: Bool,
-        errorDetails: String?
-    ) throws -> RpcV2CborError {
-        let errorCode = try AwsQueryCompatibleErrorDetails.parse(errorDetails).code
-        return try RpcV2CborError(
-            httpResponse: httpResponse,
-            responseReader: responseReader,
-            noErrorWrapping: noErrorWrapping,
-            code: errorCode
-        )
-    }
-}