diff --git a/vector-stores/spring-ai-mongodb-atlas-store/src/main/java/org/springframework/ai/vectorstore/mongodb/atlas/MongoDBAtlasVectorStore.java b/vector-stores/spring-ai-mongodb-atlas-store/src/main/java/org/springframework/ai/vectorstore/mongodb/atlas/MongoDBAtlasVectorStore.java
index c6b515aa60f..a392a8ac91c 100644
--- a/vector-stores/spring-ai-mongodb-atlas-store/src/main/java/org/springframework/ai/vectorstore/mongodb/atlas/MongoDBAtlasVectorStore.java
+++ b/vector-stores/spring-ai-mongodb-atlas-store/src/main/java/org/springframework/ai/vectorstore/mongodb/atlas/MongoDBAtlasVectorStore.java
@@ -240,7 +240,7 @@ private org.bson.Document createSearchIndexDefinition() {
 	 * @return the Spring AI Document
 	 */
 	private Document mapMongoDocument(org.bson.Document mongoDocument, float[] queryEmbedding) {
-		String id = mongoDocument.getString(ID_FIELD_NAME);
+		String id = mongoDocument.getObjectId(ID_FIELD_NAME).toHexString();
 		String content = mongoDocument.getString(CONTENT_FIELD_NAME);
 		double score = mongoDocument.getDouble(SCORE_FIELD_NAME);
 		Map<String, Object> metadata = mongoDocument.get(METADATA_FIELD_NAME, org.bson.Document.class);
diff --git a/vector-stores/spring-ai-mongodb-atlas-store/src/test/java/org/springframework/ai/vectorstore/mongodb/atlas/MongoDBAtlasVectorStoreIT.java b/vector-stores/spring-ai-mongodb-atlas-store/src/test/java/org/springframework/ai/vectorstore/mongodb/atlas/MongoDBAtlasVectorStoreIT.java
index 1f61bdf09ad..16ec5fa29ce 100644
--- a/vector-stores/spring-ai-mongodb-atlas-store/src/test/java/org/springframework/ai/vectorstore/mongodb/atlas/MongoDBAtlasVectorStoreIT.java
+++ b/vector-stores/spring-ai-mongodb-atlas-store/src/test/java/org/springframework/ai/vectorstore/mongodb/atlas/MongoDBAtlasVectorStoreIT.java
@@ -310,6 +310,30 @@ void getNativeClientTest() {
 		});
 	}
 
+	@Test
+	void shouldHandleObjectIdInSearchResults() {
+		this.contextRunner.run(context -> {
+			VectorStore vectorStore = context.getBean(VectorStore.class);
+
+			Document doc1 = new Document("Test content for ObjectId handling");
+			Document doc2 = new Document("Another test content for ObjectId handling");
+			vectorStore.add(List.of(doc1, doc2));
+			Thread.sleep(5000);
+
+			List<Document> results = vectorStore
+				.similaritySearch(SearchRequest.builder().query("Test content").topK(5).build());
+
+			assertThat(results).hasSize(2);
+			results.forEach(result -> {
+				String id = result.getId();
+				assertThat(id).isNotNull();
+				assertThat(id).matches("^[0-9a-fA-F]{24}$");
+				assertThat(result.getText()).contains("Test content");
+				assertThat(result.getMetadata()).containsKey(DocumentMetadata.DISTANCE.value());
+			});
+		});
+	}
+
 	public static String getText(String uri) {
 		var resource = new DefaultResourceLoader().getResource(uri);
 		try {