diff --git a/GUIs.Test.ZUGFeRDTest/Form1.vb b/GUIs.Test.ZUGFeRDTest/Form1.vb
index b5ad7b14..f1e33f84 100644
--- a/GUIs.Test.ZUGFeRDTest/Form1.vb
+++ b/GUIs.Test.ZUGFeRDTest/Form1.vb
@@ -100,7 +100,7 @@ Public Class Form1
         Dim oResult = OpenFileDialog1.ShowDialog()
 
         If oResult = DialogResult.OK Then
-            _zugferd.ValidateZUGFeRDFile(OpenFileDialog1.FileName)
+            _zugferd.ValidateZUGFeRDFileWithGDPicture(OpenFileDialog1.FileName)
         End If
     End Sub
 
@@ -150,7 +150,7 @@ Public Class Form1
         Dim oResult = OpenFileDialog1.ShowDialog()
 
         If oResult = DialogResult.OK Then
-            Dim oDoc = _zugferd.ValidateZUGFeRDFile(OpenFileDialog1.FileName)
+            Dim oDoc = _zugferd.ValidateZUGFeRDFileWithGDPicture(OpenFileDialog1.FileName)
             Dim oZUGFERD As CrossIndustryDocumentType = _zugferd.SerializeZUGFeRDDocument(oDoc)
             Dim oPropName As String = txtPropName.Text