diff --git a/x-pack/plugins/index_management/__jest__/client_integration/helpers/http_requests.ts b/x-pack/plugins/index_management/__jest__/client_integration/helpers/http_requests.ts
index 8bd8672b8fbba..79daba4c73867 100644
--- a/x-pack/plugins/index_management/__jest__/client_integration/helpers/http_requests.ts
+++ b/x-pack/plugins/index_management/__jest__/client_integration/helpers/http_requests.ts
@@ -147,6 +147,12 @@ const registerHttpRequestMockHelpers = (
   const setSimulateTemplateResponse = (response?: HttpResponse, error?: ResponseError) =>
     mockResponse('POST', `${API_BASE_PATH}/index_templates/simulate`, response, error);
 
+  const setSimulateTemplateByNameResponse = (
+    name: string,
+    response?: HttpResponse,
+    error?: ResponseError
+  ) => mockResponse('POST', `${API_BASE_PATH}/index_templates/simulate/${name}`, response, error);
+
   const setLoadComponentTemplatesResponse = (response?: HttpResponse, error?: ResponseError) =>
     mockResponse('GET', `${API_BASE_PATH}/component_templates`, response, error);
 
@@ -229,6 +235,7 @@ const registerHttpRequestMockHelpers = (
     setLoadIndexStatsResponse,
     setUpdateIndexSettingsResponse,
     setSimulateTemplateResponse,
+    setSimulateTemplateByNameResponse,
     setLoadComponentTemplatesResponse,
     setLoadNodesPluginsResponse,
     setLoadTelemetryResponse,
diff --git a/x-pack/plugins/index_management/__jest__/client_integration/home/index_templates_tab.test.ts b/x-pack/plugins/index_management/__jest__/client_integration/home/index_templates_tab.test.ts
index 615b8df18f905..ea536becfccac 100644
--- a/x-pack/plugins/index_management/__jest__/client_integration/home/index_templates_tab.test.ts
+++ b/x-pack/plugins/index_management/__jest__/client_integration/home/index_templates_tab.test.ts
@@ -617,7 +617,9 @@ describe('Index Templates tab', () => {
           const { find, actions, exists } = testBed;
 
           httpRequestsMockHelpers.setLoadTemplateResponse(templates[0].name, template);
-          httpRequestsMockHelpers.setSimulateTemplateResponse({ simulateTemplate: 'response' });
+          httpRequestsMockHelpers.setSimulateTemplateByNameResponse(templates[0].name, {
+            simulateTemplate: 'response',
+          });
 
           await actions.clickTemplateAt(0);
 
diff --git a/x-pack/plugins/index_management/server/routes/api/templates/register_simulate_route.ts b/x-pack/plugins/index_management/server/routes/api/templates/register_simulate_route.ts
index 3506a6a830a74..60e2cfbf8a53a 100644
--- a/x-pack/plugins/index_management/server/routes/api/templates/register_simulate_route.ts
+++ b/x-pack/plugins/index_management/server/routes/api/templates/register_simulate_route.ts
@@ -24,6 +24,9 @@ export function registerSimulateRoute({ router, lib: { handleEsError } }: RouteD
     async (context, request, response) => {
       const { client } = (await context.core).elasticsearch;
       const template = request.body as TypeOf<typeof bodySchema>;
+      // Until ES fixes a bug on their side we need to send a fake index pattern
+      // that won't match any indices.
+      // Issue: https://github.com/elastic/elasticsearch/issues/59152
       // eslint-disable-next-line @typescript-eslint/naming-convention
       const index_patterns = ['a_fake_index_pattern_that_wont_match_any_indices'];
       const templateName = request.params.templateName;
@@ -38,9 +41,6 @@ export function registerSimulateRoute({ router, lib: { handleEsError } }: RouteD
         : {
             body: {
               ...template,
-              // Until ES fixes a bug on their side we need to send a fake index pattern
-              // that won't match any indices.
-              // Issue: https://github.com/elastic/elasticsearch/issues/59152
               index_patterns,
             },
           };