diff --git a/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStoreService.java b/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStoreService.java
index 4e73efe13f..f6d51dfc10 100644
--- a/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStoreService.java
+++ b/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStoreService.java
@@ -134,6 +134,20 @@ import org.slf4j.LoggerFactory;
 @Designate(ocd = Configuration.class)
 public class DocumentNodeStoreService {
 
+    @Component(
+            configurationPolicy = ConfigurationPolicy.OPTIONAL,
+            service = Defaults.class)
+    public static class Defaults {
+        @Activate
+        private void activate(Configuration configuration) {
+            // nothing to do, but Configuration in signature causes correct DS XML generation,
+            // i.e. default values are set
+        }
+    }
+
+    @Reference(service = Defaults.class)
+    private Configuration defaultConfig;
+
     private static final long MB = 1024 * 1024;
     static final String DEFAULT_URI = "mongodb://localhost:27017/oak";
     static final int DEFAULT_CACHE = (int) (DEFAULT_MEMORY_CACHE_SIZE / MB);