diff --git a/sdks/java/core/src/main/java/org/apache/beam/sdk/schemas/utils/SelectHelpers.java b/sdks/java/core/src/main/java/org/apache/beam/sdk/schemas/utils/SelectHelpers.java
index 3a04174d3318d..e3baf68df9543 100644
--- a/sdks/java/core/src/main/java/org/apache/beam/sdk/schemas/utils/SelectHelpers.java
+++ b/sdks/java/core/src/main/java/org/apache/beam/sdk/schemas/utils/SelectHelpers.java
@@ -34,6 +34,7 @@
 import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.Lists;
 import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.Maps;
 
+/** Helper methods to select fields from a Schema. */
 public class SelectHelpers {
   // Currently we don't flatten selected nested fields.
   public static Schema getOutputSchema(