diff --git a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDInvoiceImporter.java b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDInvoiceImporter.java
index eea28b1b..c0c4b51c 100644
--- a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDInvoiceImporter.java
+++ b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDInvoiceImporter.java
@@ -1,6 +1,7 @@
 package org.mustangproject.ZUGFeRD;
 
 import java.io.IOException;
+import java.io.InputStream;
 import java.math.BigDecimal;
 import java.math.RoundingMode;
 import java.nio.charset.StandardCharsets;
@@ -43,6 +44,10 @@ public class ZUGFeRDInvoiceImporter extends ZUGFeRDImporter {
 		super(filename);
 	}
 
+	public ZUGFeRDInvoiceImporter(InputStream stream) {
+		super(stream);
+	}
+
 	public void fromXML(String XML) {
 		try {
 			containsMeta = true;