diff --git a/library/src/test/java/org/mustangproject/ZUGFeRD/ZF2PushTest.java b/library/src/test/java/org/mustangproject/ZUGFeRD/ZF2PushTest.java
index 6ff582e6..d0309a01 100644
--- a/library/src/test/java/org/mustangproject/ZUGFeRD/ZF2PushTest.java
+++ b/library/src/test/java/org/mustangproject/ZUGFeRD/ZF2PushTest.java
@@ -279,6 +279,8 @@ public class ZF2PushTest extends TestCase {
 		// now check the contents (like MustangReaderTest)
 		ZUGFeRDImporter zi = new ZUGFeRDImporter(TARGET_PUSHEDGE);
 
+		assertTrue(zi.getUTF8().contains("0009845"));
+		assertTrue(zi.getUTF8().contains("0008734"));
 		assertTrue(zi.getUTF8().contains("item level 1/1"));
 		assertTrue(zi.getUTF8().contains("document level 2/2"));