diff --git a/x-pack/legacy/plugins/ml/public/application/data_frame_analytics/pages/analytics_management/components/create_analytics_form/create_analytics_form.tsx b/x-pack/legacy/plugins/ml/public/application/data_frame_analytics/pages/analytics_management/components/create_analytics_form/create_analytics_form.tsx
index 47af274424c444..60105948da5962 100644
--- a/x-pack/legacy/plugins/ml/public/application/data_frame_analytics/pages/analytics_management/components/create_analytics_form/create_analytics_form.tsx
+++ b/x-pack/legacy/plugins/ml/public/application/data_frame_analytics/pages/analytics_management/components/create_analytics_form/create_analytics_form.tsx
@@ -118,7 +118,8 @@ export const CreateAnalyticsForm: FC<CreateAnalyticsFormProps> = ({ actions, sta
       delete jobConfig.model_memory_limit;
       const resp = await ml.dataFrameAnalytics.estimateDataFrameAnalyticsMemoryUsage(jobConfig);
       setFormState({
-        modelMemoryLimit: resp.expected_memory_without_disk,
+        modelMemoryLimit:
+          resp.memory_estimation && resp.memory_estimation.expected_memory_without_disk,
       });
     } catch (e) {
       setFormState({
diff --git a/x-pack/legacy/plugins/ml/public/application/services/ml_api_service/data_frame_analytics.js b/x-pack/legacy/plugins/ml/public/application/services/ml_api_service/data_frame_analytics.js
index d29793366b9a20..a973950037347c 100644
--- a/x-pack/legacy/plugins/ml/public/application/services/ml_api_service/data_frame_analytics.js
+++ b/x-pack/legacy/plugins/ml/public/application/services/ml_api_service/data_frame_analytics.js
@@ -49,7 +49,7 @@ export const dataFrameAnalytics = {
   },
   estimateDataFrameAnalyticsMemoryUsage(jobConfig) {
     return http({
-      url: `${basePath}/data_frame/analytics/_estimate_memory_usage`,
+      url: `${basePath}/data_frame/analytics/_explain`,
       method: 'POST',
       data: jobConfig
     });
diff --git a/x-pack/legacy/plugins/ml/server/client/elasticsearch_ml.js b/x-pack/legacy/plugins/ml/server/client/elasticsearch_ml.js
index 3df1d3e2c3bd0e..2922bb9ebea017 100644
--- a/x-pack/legacy/plugins/ml/server/client/elasticsearch_ml.js
+++ b/x-pack/legacy/plugins/ml/server/client/elasticsearch_ml.js
@@ -173,7 +173,7 @@ export const elasticsearchJsPlugin = (Client, config, components) => {
   ml.estimateDataFrameAnalyticsMemoryUsage = ca({
     urls: [
       {
-        fmt: '/_ml/data_frame/analytics/_estimate_memory_usage',
+        fmt: '/_ml/data_frame/analytics/_explain',
       }
     ],
     needBody: true,
diff --git a/x-pack/legacy/plugins/ml/server/routes/data_frame_analytics.js b/x-pack/legacy/plugins/ml/server/routes/data_frame_analytics.js
index d467aeea31f99d..5c4fc909cda05f 100644
--- a/x-pack/legacy/plugins/ml/server/routes/data_frame_analytics.js
+++ b/x-pack/legacy/plugins/ml/server/routes/data_frame_analytics.js
@@ -93,7 +93,7 @@ export function dataFrameAnalyticsRoutes({ commonRouteConfig, elasticsearchPlugi
 
   route({
     method: 'POST',
-    path: '/api/ml/data_frame/analytics/_estimate_memory_usage',
+    path: '/api/ml/data_frame/analytics/_explain',
     handler(request) {
       const callWithRequest = callWithRequestFactory(elasticsearchPlugin, request);
       return callWithRequest('ml.estimateDataFrameAnalyticsMemoryUsage', { body: request.payload })