diff --git a/SEDAPExpress/dist/SEDAPExpress-v1.0.0.jar b/SEDAPExpress/dist/SEDAPExpress-v1.0.0.jar
index 28555cd..a4f9883 100644
Binary files a/SEDAPExpress/dist/SEDAPExpress-v1.0.0.jar and b/SEDAPExpress/dist/SEDAPExpress-v1.0.0.jar differ
diff --git a/SEDAPExpress/src/main/java/de/bundeswehr/mese/sedapexpress/messages/SEDAPExpressMessage.java b/SEDAPExpress/src/main/java/de/bundeswehr/mese/sedapexpress/messages/SEDAPExpressMessage.java
index 3a55f67..6c45294 100644
--- a/SEDAPExpress/src/main/java/de/bundeswehr/mese/sedapexpress/messages/SEDAPExpressMessage.java
+++ b/SEDAPExpress/src/main/java/de/bundeswehr/mese/sedapexpress/messages/SEDAPExpressMessage.java
@@ -826,7 +826,7 @@ protected StringBuilder serializeHeader() {
 	StringBuilder result = new StringBuilder(this.getClass().getSimpleName()).append(';');
 
 	if (this.number != null) {
-	    result.append(SEDAPExpressMessage.HEXFOMATER.toHexDigits((this.number)));
+	    result.append(SEDAPExpressMessage.HEXFOMATER.toHexDigits((this.number)).substring(2));
 	}
 	result.append(';');