diff --git a/library/src/main/java/org/mustangproject/ZUGFeRD/DXExporterFromA3.java b/library/src/main/java/org/mustangproject/ZUGFeRD/DXExporterFromA3.java
index 7ba37681..94d50ca4 100644
--- a/library/src/main/java/org/mustangproject/ZUGFeRD/DXExporterFromA3.java
+++ b/library/src/main/java/org/mustangproject/ZUGFeRD/DXExporterFromA3.java
@@ -398,7 +398,7 @@ public class DXExporterFromA3 extends ZUGFeRDExporterFromA3 {
 	/**
 	 * Sets the property for DocumentType.
 	 *
-	 * @param
+	 * @param DocumentType String, usually DESPATCHADVICE
 	 *
 	 * @return this exporter
 	 */