diff --git a/helix-gateway/src/main/java/org/apache/helix/gateway/api/service/HelixGatewayServiceProcessor.java b/helix-gateway/src/main/java/org/apache/helix/gateway/api/service/HelixGatewayServiceProcessor.java
index 0a50cfdedd..325e413237 100644
--- a/helix-gateway/src/main/java/org/apache/helix/gateway/api/service/HelixGatewayServiceProcessor.java
+++ b/helix-gateway/src/main/java/org/apache/helix/gateway/api/service/HelixGatewayServiceProcessor.java
@@ -4,7 +4,8 @@
 import org.apache.helix.model.Message;
 
 /**
- * Translate from/to GRPC function call to Helix Gateway Service event.
+ * Helix Gateway Service Processor interface allows sending state transition messages to
+ * participants through services implementing this interface.
  */
 public interface HelixGatewayServiceProcessor {