diff --git a/Jobs/ZUGFeRD/ImportZUGFeRDFiles.vb b/Jobs/ZUGFeRD/ImportZUGFeRDFiles.vb
index d68b4348..515e5da8 100644
--- a/Jobs/ZUGFeRD/ImportZUGFeRDFiles.vb
+++ b/Jobs/ZUGFeRD/ImportZUGFeRDFiles.vb
@@ -279,6 +279,14 @@ Public Class ImportZUGFeRDFiles
                                     End Select
                                 End Try
 
+                                ' Check if there are more than one ZUGFeRD files
+                                If oZUGFeRDCount = 1 Then
+                                    Throw New TooMuchFerdsException()
+                                End If
+
+                                ' Since extraction went well, increase the amount of ZUGFeRD files
+                                oZUGFeRDCount += 1
+
                                 ' Extract all attachments with the extensions specified in `AllowedExtensions`.
                                 ' If you need to extract and use embedded xml files, you need to filter out the zugferd-invoice.xml yourself.
                                 ' Right now the zugferd-invoice.xml is filtered out because `AllowedExtensions` does not contain `xml`.
@@ -292,14 +300,6 @@ Public Class ImportZUGFeRDFiles
                                 ' Check the Checksum and rejection status
                                 oMD5CheckSum = GenerateAndCheck_MD5Sum(oFile.FullName, oArgs.IgnoreRejectionStatus)
 
-                                ' Check if there are more than one ZUGFeRD files
-                                If oZUGFeRDCount = 1 Then
-                                    Throw New TooMuchFerdsException()
-                                End If
-
-                                ' Since extraction went well, increase the amount of ZUGFeRD files
-                                oZUGFeRDCount += 1
-
                                 ' Check the document against the configured property map and return:
                                 ' - a List of valid properties 
                                 ' - a List of missing properties