Index: /mods/mod_rechnungen/wpsg_invoice.php
===================================================================
--- /mods/mod_rechnungen/wpsg_invoice.php	(revision 8222)
+++ /mods/mod_rechnungen/wpsg_invoice.php	(revision 8223)
@@ -184,6 +184,6 @@
 			}
 			
-			if ($this->isInvoice()) $strReturn .= 'R '.$this->__get('rnr');
-			else if ($this->isStorno()) $strReturn .= 'RK '.$this->__get('gnr');
+			if ($this->isInvoice()) $strReturn .= $this->__get('rnr');
+			else if ($this->isStorno()) $strReturn .= $this->__get('gnr');
 			
 			if ($oOrderProduct !== null) {