diff --git a/source/org/thdl/tib/input/ConvertDialog.java b/source/org/thdl/tib/input/ConvertDialog.java
index 0036d1b..7a5e007 100644
--- a/source/org/thdl/tib/input/ConvertDialog.java
+++ b/source/org/thdl/tib/input/ConvertDialog.java
@@ -341,7 +341,7 @@ class ConvertDialog extends JDialog
                     return;
                 }
 
-                openWithExternalViewer(this, fileToOpen);
+                openWithExternalViewer(this, namedFile.getAbsolutePath());
             } catch (SecurityException se) {
                 JOptionPane.showMessageDialog(this,
                                               "Cannot proceed because your security policy interfered.",