diff --git a/baselines/dlp/src/v2/dlp_service_client.ts.baseline b/baselines/dlp/src/v2/dlp_service_client.ts.baseline
index 09d40b2c3..e8dea7fd5 100644
--- a/baselines/dlp/src/v2/dlp_service_client.ts.baseline
+++ b/baselines/dlp/src/v2/dlp_service_client.ts.baseline
@@ -756,6 +756,13 @@ export class DlpServiceClient {
       options = optionsOrCallback as gax.CallOptions;
     }
     options = options || {};
+    options.otherArgs = options.otherArgs || {};
+    options.otherArgs.headers = options.otherArgs.headers || {};
+    options.otherArgs.headers[
+      'x-goog-request-params'
+    ] = gax.routingHeader.fromParams({
+      'location_id': request.locationId || '',
+    });
     this.initialize();
     return this.innerApiCalls.listInfoTypes(request, options, callback);
   }
diff --git a/baselines/dlp/test/gapic_dlp_service_v2.ts.baseline b/baselines/dlp/test/gapic_dlp_service_v2.ts.baseline
index 0b2edf0b6..6c6ddcbf9 100644
--- a/baselines/dlp/test/gapic_dlp_service_v2.ts.baseline
+++ b/baselines/dlp/test/gapic_dlp_service_v2.ts.baseline
@@ -509,7 +509,15 @@ describe('v2.DlpServiceClient', () => {
             });
             client.initialize();
             const request = generateSampleMessage(new protos.google.privacy.dlp.v2.ListInfoTypesRequest());
-            const expectedOptions = {};
+            request.locationId = '';
+            const expectedHeaderRequestParams = "location_id=";
+            const expectedOptions = {
+                otherArgs: {
+                    headers: {
+                        'x-goog-request-params': expectedHeaderRequestParams,
+                    },
+                },
+            };
             const expectedResponse = generateSampleMessage(new protos.google.privacy.dlp.v2.ListInfoTypesResponse());
             client.innerApiCalls.listInfoTypes = stubSimpleCall(expectedResponse);
             const [response] = await client.listInfoTypes(request);
@@ -525,7 +533,15 @@ describe('v2.DlpServiceClient', () => {
             });
             client.initialize();
             const request = generateSampleMessage(new protos.google.privacy.dlp.v2.ListInfoTypesRequest());
-            const expectedOptions = {};
+            request.locationId = '';
+            const expectedHeaderRequestParams = "location_id=";
+            const expectedOptions = {
+                otherArgs: {
+                    headers: {
+                        'x-goog-request-params': expectedHeaderRequestParams,
+                    },
+                },
+            };
             const expectedResponse = generateSampleMessage(new protos.google.privacy.dlp.v2.ListInfoTypesResponse());
             client.innerApiCalls.listInfoTypes = stubSimpleCallWithCallback(expectedResponse);
             const promise = new Promise((resolve, reject) => {
@@ -552,7 +568,15 @@ describe('v2.DlpServiceClient', () => {
             });
             client.initialize();
             const request = generateSampleMessage(new protos.google.privacy.dlp.v2.ListInfoTypesRequest());
-            const expectedOptions = {};
+            request.locationId = '';
+            const expectedHeaderRequestParams = "location_id=";
+            const expectedOptions = {
+                otherArgs: {
+                    headers: {
+                        'x-goog-request-params': expectedHeaderRequestParams,
+                    },
+                },
+            };
             const expectedError = new Error('expected');
             client.innerApiCalls.listInfoTypes = stubSimpleCall(undefined, expectedError);
             await assert.rejects(async () => { await client.listInfoTypes(request); }, expectedError);
diff --git a/typescript/src/schema/proto.ts b/typescript/src/schema/proto.ts
index 0d1a27a82..ddbad3b10 100644
--- a/typescript/src/schema/proto.ts
+++ b/typescript/src/schema/proto.ts
@@ -255,7 +255,7 @@ export function getSingleHeaderParam(
   const message =
     rule.post || rule.delete || rule.get || rule.put || rule.patch;
   if (message) {
-    const res = message.match(/{(.*?)=/);
+    const res = message.match(/{(.*?)[=}]/);
     return res?.[1] ? res[1].split('.') : [];
   }
   return [];