diff --git a/config.php b/config.php
index 142a72a..f1b3ab6 100644
--- a/config.php
+++ b/config.php
@@ -54,7 +54,7 @@ class config
     $conf = array ();
     $rc = include ($this->confFile);
     if ($rc !== 1)
-      throw new Exception ("Error in configuration file");
+      throw new Exception ("Error in configuration file", 500);
     return $conf;
   }
 
@@ -65,7 +65,7 @@ class config
   {
     $this->selectConfFile ();
     if (!array_key_exists ($param, $this->default))
-      throw new Exception ("Unknown parameter '$param'");
+      throw new Exception ("Unknown parameter '$param'", 500);
     if (!file_exists ($this->confFile))
     {
       if (@file_put_contents ($this->confFile,
@@ -73,7 +73,7 @@ class config
           === FALSE)
         throw new Exception (sprintf (dgettext("domframework", 
                 "No configuration file '%s' available and it can't be created"),
-                $this->confFile));
+                $this->confFile), 500);
     }
     elseif (! is_readable ($this->confFile))
       throw new Exception (sprintf ( dgettext("domframework", 
@@ -82,7 +82,7 @@ class config
     $conf = array ();
     $rc = include ($this->confFile);
     if ($rc !== 1)
-      throw new Exception ("Error in configuration file");
+      throw new Exception ("Error in configuration file", 500);
     if (array_key_exists ($param, $conf))
     {
       if (! is_array ($conf[$param]))
@@ -110,7 +110,7 @@ class config
   {
     $this->selectConfFile ();
     if (!array_key_exists ($param, $this->default))
-      throw new Exception ("Unknown parameter '$param'");
+      throw new Exception ("Unknown parameter '$param'", 500);
     if (!file_exists ($this->confFile))
     {
       if (@file_put_contents ($this->confFile,
@@ -124,11 +124,11 @@ class config
       throw new Exception (sprintf (
                                dgettext("domframework", 
                                "The configuration file '%s' is not readable"),
-                                $this->confFile));
+                                $this->confFile), 500);
     if (!is_writeable ($this->confFile))
       throw new Exception (sprintf (dgettext("domframework", 
                                   "Configuration file '%s' is write protected"),
-                                   $this->confFile));
+                                   $this->confFile), 500);
     $conf = array ();
     $rc = include ($this->confFile);
     if ($rc !== 1)
@@ -143,7 +143,7 @@ class config
     if (@file_put_contents ($this->confFile, $txt, LOCK_EX) === FALSE)
       throw new Exception (sprintf (dgettext("domframework", 
                                     "Can't save configuration file '%s'"),
-                                    $this->confFile));
+                                    $this->confFile), 500);
     return TRUE;
   }