diff --git a/smithy-aws-protocol-tests/model/restJson1/http-payload.smithy b/smithy-aws-protocol-tests/model/restJson1/http-payload.smithy
index 3d11d8888e7..d2acdae8fb7 100644
--- a/smithy-aws-protocol-tests/model/restJson1/http-payload.smithy
+++ b/smithy-aws-protocol-tests/model/restJson1/http-payload.smithy
@@ -308,9 +308,6 @@ apply HttpPayloadWithUnion @httpRequestTests([
         method: "PUT",
         uri: "/HttpPayloadWithUnion",
         body: "",
-        headers: {
-            "Content-Length": "0"
-        },
         params: {}
     }
 ])
diff --git a/smithy-aws-protocol-tests/model/restXml/http-payload.smithy b/smithy-aws-protocol-tests/model/restXml/http-payload.smithy
index 4713d36f86b..401cf90f347 100644
--- a/smithy-aws-protocol-tests/model/restXml/http-payload.smithy
+++ b/smithy-aws-protocol-tests/model/restXml/http-payload.smithy
@@ -573,7 +573,6 @@ apply HttpPayloadWithUnion @httpRequestTests([
         body: "",
         headers: {
             "Content-Type": "application/xml",
-            "Content-Length": "0"
         },
         params: {}
     }