diff --git a/baselines/logging/src/v2/logging_service_v2_client.ts.baseline b/baselines/logging/src/v2/logging_service_v2_client.ts.baseline
index 5ba88cbd3..cc44146d2 100644
--- a/baselines/logging/src/v2/logging_service_v2_client.ts.baseline
+++ b/baselines/logging/src/v2/logging_service_v2_client.ts.baseline
@@ -230,7 +230,8 @@ export class LoggingServiceV2Client {
     this._descriptors.batching = {
       WriteLogEntries: new this._gaxModule.BundleDescriptor(
         'entries',
-        ['log_name','resource','labels'],null,
+        ['log_name','resource','labels'],
+        null,
         gax.createByteLengthFunction(
           // tslint:disable-next-line no-any
           protoFilesRoot.lookupType('google.logging.v2.LogEntry') as any
diff --git a/templates/typescript_gapic/src/$version/$service_client.ts.njk b/templates/typescript_gapic/src/$version/$service_client.ts.njk
index ac98763f0..8644039bf 100644
--- a/templates/typescript_gapic/src/$version/$service_client.ts.njk
+++ b/templates/typescript_gapic/src/$version/$service_client.ts.njk
@@ -234,7 +234,11 @@ export class {{ service.name }}Client {
         '{{ field }}'
 {%- endfor -%}
         ],
-        {{- method.bundleConfig.batchDescriptor.subresponse_field }},
+{%- if method.bundleConfig.batchDescriptor.subresponse_field === 'null' %}
+        null,
+{%- else %}
+        '{{- method.bundleConfig.batchDescriptor.subresponse_field }}',
+{%- endif %}
         gax.createByteLengthFunction(
           // tslint:disable-next-line no-any
           protoFilesRoot.lookupType('{{ method.bundleConfig.repeatedField }}') as any