diff --git a/x-pack/plugins/index_management/public/application/components/mappings_editor/components/document_fields/fields/create_field/semantic_text/use_semantic_text.test.ts b/x-pack/plugins/index_management/public/application/components/mappings_editor/components/document_fields/fields/create_field/semantic_text/use_semantic_text.test.ts
index c4e668f9635d1..65415a287d94c 100644
--- a/x-pack/plugins/index_management/public/application/components/mappings_editor/components/document_fields/fields/create_field/semantic_text/use_semantic_text.test.ts
+++ b/x-pack/plugins/index_management/public/application/components/mappings_editor/components/document_fields/fields/create_field/semantic_text/use_semantic_text.test.ts
@@ -258,7 +258,9 @@ describe('useSemanticText', () => {
       {
         service: 'elser',
         service_settings: {
-          num_allocations: 1,
+          adaptive_allocations: {
+            enabled: true,
+          },
           num_threads: 1,
           model_id: '.elser_model_2',
         },
diff --git a/x-pack/plugins/index_management/public/application/components/mappings_editor/components/document_fields/fields/create_field/semantic_text/use_semantic_text.ts b/x-pack/plugins/index_management/public/application/components/mappings_editor/components/document_fields/fields/create_field/semantic_text/use_semantic_text.ts
index 42d220ba4724b..6662c2852ad7b 100644
--- a/x-pack/plugins/index_management/public/application/components/mappings_editor/components/document_fields/fields/create_field/semantic_text/use_semantic_text.ts
+++ b/x-pack/plugins/index_management/public/application/components/mappings_editor/components/document_fields/fields/create_field/semantic_text/use_semantic_text.ts
@@ -85,7 +85,7 @@ export function useSemanticText(props: UseSemanticTextProps) {
         : {
             service: defaultInferenceEndpointConfig.service,
             service_settings: {
-              num_allocations: 1,
+              adaptive_allocations: { enabled: true },
               num_threads: 1,
               model_id: trainedModelId,
             },