diff --git a/src/es_archiver/lib/indices/__tests__/create_index_stream.js b/src/es_archiver/lib/indices/__tests__/create_index_stream.js
index 830512f3476ed3..4ce12ab3376a34 100644
--- a/src/es_archiver/lib/indices/__tests__/create_index_stream.js
+++ b/src/es_archiver/lib/indices/__tests__/create_index_stream.js
@@ -113,7 +113,6 @@ describe('esArchiver: createCreateIndexStream()', () => {
       sinon.assert.calledWith(client.indices.create, {
         method: 'PUT',
         index: 'index',
-        include_type_name: false,
         body: {
           settings: undefined,
           mappings: undefined,
diff --git a/src/es_archiver/lib/indices/create_index_stream.js b/src/es_archiver/lib/indices/create_index_stream.js
index 746f0d689ce56c..ceac41d8276e14 100644
--- a/src/es_archiver/lib/indices/create_index_stream.js
+++ b/src/es_archiver/lib/indices/create_index_stream.js
@@ -52,16 +52,21 @@ export function createCreateIndexStream({ client, stats, skipExisting, log }) {
           await deleteKibanaIndicesOnce({ client, stats, log });
         }
 
-        await client.indices.create({
+        const createArgs = {
           method: 'PUT',
           index,
-          include_type_name: isPre7Mapping,
           body: {
             settings,
             mappings,
             aliases
           },
-        });
+        };
+
+        if (isPre7Mapping) {
+          createArgs.include_type_name = isPre7Mapping;
+        }
+
+        await client.indices.create(createArgs);
 
         stats.createdIndex(index, { settings });
       } catch (err) {
diff --git a/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.create.json b/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.create.json
index 1970f88b30958d..8227e38d3c6d90 100644
--- a/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.create.json
+++ b/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.create.json
@@ -1,7 +1,6 @@
 {
   "indices.create": {
     "url_params": {
-      "include_type_name": "__flag__",
       "wait_for_active_shards": "",
       "timeout": "",
       "master_timeout": ""
diff --git a/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.get.json b/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.get.json
index f515e73b250a7e..7ca9e88274aa53 100644
--- a/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.get.json
+++ b/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.get.json
@@ -1,7 +1,6 @@
 {
   "indices.get": {
     "url_params": {
-      "include_type_name": "__flag__",
       "local": "__flag__",
       "ignore_unavailable": "__flag__",
       "allow_no_indices": "__flag__",
diff --git a/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.get_field_mapping.json b/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.get_field_mapping.json
index 362b266ecb1831..ea952435566ed7 100644
--- a/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.get_field_mapping.json
+++ b/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.get_field_mapping.json
@@ -1,7 +1,6 @@
 {
   "indices.get_field_mapping": {
     "url_params": {
-      "include_type_name": "__flag__",
       "include_defaults": "__flag__",
       "ignore_unavailable": "__flag__",
       "allow_no_indices": "__flag__",
diff --git a/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.get_template.json b/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.get_template.json
index d5f52ec76b374a..f5902929c25cc5 100644
--- a/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.get_template.json
+++ b/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.get_template.json
@@ -1,7 +1,6 @@
 {
   "indices.get_template": {
     "url_params": {
-      "include_type_name": "__flag__",
       "flat_settings": "__flag__",
       "master_timeout": "",
       "local": "__flag__"
diff --git a/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.put_template.json b/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.put_template.json
index 8b3480f24d8fba..54a7625a2713cf 100644
--- a/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.put_template.json
+++ b/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.put_template.json
@@ -1,7 +1,6 @@
 {
   "indices.put_template": {
     "url_params": {
-      "include_type_name": "__flag__",
       "order": "",
       "create": "__flag__",
       "timeout": "",
diff --git a/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.rollover.json b/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.rollover.json
index 7fa76a687eb772..19e0f1f909ab8c 100644
--- a/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.rollover.json
+++ b/src/legacy/core_plugins/console/server/api_server/spec/generated/indices.rollover.json
@@ -1,7 +1,6 @@
 {
   "indices.rollover": {
     "url_params": {
-      "include_type_name": "__flag__",
       "timeout": "",
       "dry_run": "__flag__",
       "master_timeout": "",
diff --git a/x-pack/legacy/plugins/upgrade_assistant/server/lib/reindexing/reindex_actions.ts b/x-pack/legacy/plugins/upgrade_assistant/server/lib/reindexing/reindex_actions.ts
index d3297dbbf122eb..a162186ff0059c 100644
--- a/x-pack/legacy/plugins/upgrade_assistant/server/lib/reindexing/reindex_actions.ts
+++ b/x-pack/legacy/plugins/upgrade_assistant/server/lib/reindexing/reindex_actions.ts
@@ -231,7 +231,7 @@ export const reindexActionsFactory = (
 
     async getFlatSettings(indexName: string) {
       const flatSettings = (await callCluster('transport.request', {
-        path: `/${encodeURIComponent(indexName)}?flat_settings=true&include_type_name=false`,
+        path: `/${encodeURIComponent(indexName)}?flat_settings=true`,
       })) as { [indexName: string]: FlatSettings };
 
       if (!flatSettings[indexName]) {