diff --git a/server/src/main/java/org/elasticsearch/index/mapper/DynamicFieldsBuilder.java b/server/src/main/java/org/elasticsearch/index/mapper/DynamicFieldsBuilder.java
index 71c6a4e7a9fbc..012a352a3f499 100644
--- a/server/src/main/java/org/elasticsearch/index/mapper/DynamicFieldsBuilder.java
+++ b/server/src/main/java/org/elasticsearch/index/mapper/DynamicFieldsBuilder.java
@@ -339,6 +339,7 @@ public boolean newDynamicStringField(DocumentParserContext context, String name)
                     new TextFieldMapper.Builder(
                         name,
                         indexSettings.getIndexVersionCreated(),
+                        indexSettings.getMode(),
                         context.indexAnalyzers(),
                         SourceFieldMapper.isSynthetic(indexSettings),
                         false