diff --git a/src/services/Elastic.Documentation.Assembler/Building/AssemblerSitemapService.cs b/src/services/Elastic.Documentation.Assembler/Building/AssemblerSitemapService.cs
index 84843a2c3..cf84fa80f 100644
--- a/src/services/Elastic.Documentation.Assembler/Building/AssemblerSitemapService.cs
+++ b/src/services/Elastic.Documentation.Assembler/Building/AssemblerSitemapService.cs
@@ -76,7 +76,7 @@ public async Task<bool> GenerateSitemapAsync(
 
 		var transport = ElasticsearchTransportFactory.Create(cfg);
 
-		var indexName = DocumentationMappingContext.DocumentationDocument
+		var indexName = DocumentationMappingContext.DocumentationDocumentSemantic
 			.CreateContext(type: "assembler", env: environment)
 			.ResolveReadTarget();
 
diff --git a/src/services/Elastic.Documentation.Assembler/Building/EsSitemapReader.cs b/src/services/Elastic.Documentation.Assembler/Building/EsSitemapReader.cs
index a41fa0edb..229dab4e9 100644
--- a/src/services/Elastic.Documentation.Assembler/Building/EsSitemapReader.cs
+++ b/src/services/Elastic.Documentation.Assembler/Building/EsSitemapReader.cs
@@ -13,7 +13,7 @@ namespace Elastic.Documentation.Assembler.Building;
 
 public record SitemapEntry(string Url, DateTimeOffset LastUpdated);
 
-/// <summary>Reads all url + content_last_updated pairs from the ES lexical index using search_after with PIT.</summary>
+/// <summary>Reads all url + content_last_updated pairs from the ES semantic index using search_after with PIT.</summary>
 public class EsSitemapReader(DistributedTransport transport, ILogger logger, string indexName)
 {
 	private const int PageSize = 1000;