diff --git a/include/class_SnapshotHandler.inc b/include/class_SnapshotHandler.inc
index 8d1dece318e2bcf565c6a13b6a50c385ca93d8ad..954d95fee2dd3ba257ed2d92b812da57b876eadb 100644
--- a/include/class_SnapshotHandler.inc
+++ b/include/class_SnapshotHandler.inc
@@ -459,7 +459,7 @@ class SnapshotHandler
       if (!$ldap->success()) {
         msg_dialog::display(_("LDAP error"), msgPool::ldaperror($ldap->get_error(), $dn, "", get_class()), LDAP_ERROR);
       }
-    } catch (Exception $e) {
+    } catch (LDIFImportException $e) {
       msg_dialog::display(_('LDAP error'), $e->getMessage(), ERROR_DIALOG);
     }
   }
diff --git a/include/class_config.inc b/include/class_config.inc
index cb1f6c6595f89d45558aeb7e89eb26d43043414a..444318dcb407623a4913cfb17c7ac8062a385c6c 100644
--- a/include/class_config.inc
+++ b/include/class_config.inc
@@ -275,7 +275,7 @@ class config  {
         try {
           $cache[$creds] = cred_decrypt($creds, $_SERVER['HTTP_FDKEY']);
           session::global_set('HTTP_FDKEY_CACHE', $cache);
-        } catch (Exception $e) {
+        } catch (FusionDirectoryException $e) {
           $msg = sprintf(
             _('It seems you are trying to decode something which is not encoded : %s<br/>'."\n".
               'Please check you are not using a fusiondirectory.secrets file while your passwords are not encrypted.'),
diff --git a/include/class_exceptions.inc b/include/class_exceptions.inc
new file mode 100644
index 0000000000000000000000000000000000000000..7bbb356c97a03335f76135722e8784be71524e8b
--- /dev/null
+++ b/include/class_exceptions.inc
@@ -0,0 +1,46 @@
+<?php
+/*
+  This code is part of FusionDirectory (http://www.fusiondirectory.org/)
+  Copyright (C) 2015-2016  FusionDirectory
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
+*/
+
+/*!
+ * \file class_exceptions.inc
+ * Source code for FusionDirectory exceptions
+ */
+
+/*! \class FusionDirectoryException
+    \brief Parent class for all exceptions thrown in FusionDirectory
+*/
+class FusionDirectoryException extends Exception {}
+
+/*! \class LDIFImportException
+    \brief Exception class which can be thrown by LDAP if the LDIF format is broken
+*/
+class LDIFImportException extends FusionDirectoryException {}
+
+/*! \class LdapGeneralizedTimeBadFormatException
+    \brief Exception class which can be thrown by LdapGeneralizedTime if the format does not match
+*/
+class LdapGeneralizedTimeBadFormatException extends FusionDirectoryException {}
+
+class NonExistingObjectTypeException extends FusionDirectoryException {}
+class NonExistingBranchException extends FusionDirectoryException {}
+class NonExistingLdapNodeException extends FusionDirectoryException {}
+class EmptyFilterException extends FusionDirectoryException {}
+class NoManagementClassException extends FusionDirectoryException {}
+class LDAPFailureException extends FusionDirectoryException {}
diff --git a/include/class_ldapGeneralizedTime.inc b/include/class_ldapGeneralizedTime.inc
index 42effea1261b161d13b6cf692f9d56ac25905146..0a1e7c662034045e0be703de0eb16c9f65d343f8 100644
--- a/include/class_ldapGeneralizedTime.inc
+++ b/include/class_ldapGeneralizedTime.inc
@@ -32,11 +32,6 @@
     '19941216101255,5Z'
 */
 
-/*! \class LdapGeneralizedTimeBadFormatException
-    \brief Exception class which can be thrown by LdapGeneralizedTime if the format does not match
-*/
-class LdapGeneralizedTimeBadFormatException extends Exception {};
-
 /*! \class LdapGeneralizedTime
     \brief LdapGeneralizedTime allows you to convert from and to LDAP GeneralizedTime format PHP DateTime objects
 
diff --git a/include/class_objects.inc b/include/class_objects.inc
index 6019aa122f5b1272a290c4599fd6990db58ac866..2c9e96ea58bf39e4ca6cf5176f96a21cbc55830d 100644
--- a/include/class_objects.inc
+++ b/include/class_objects.inc
@@ -19,10 +19,6 @@
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
 */
 
-class NonExistingObjectTypeException extends Exception {}
-class NonExistingBranchException extends Exception {}
-class EmptyFilterException extends Exception {}
-
 class objects
 {
   /*!
diff --git a/include/class_plugin.inc b/include/class_plugin.inc
index b77085fb4c10facc15324c52c260b7bbb5998832..ae9e550f16be5f33b81ff6ebf979e46f314c3594 100644
--- a/include/class_plugin.inc
+++ b/include/class_plugin.inc
@@ -19,8 +19,6 @@
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
 */
 
-class NonExistingLdapNodeException extends Exception {}
-
 /*!
  * \file class_plugin.inc
  * Source code for the class plugin
diff --git a/include/functions.inc b/include/functions.inc
index a5b57336bbd178847e95734c070119b840215699..6a22ebfa934838b62bb33ca43089db6ae58a3bb9 100644
--- a/include/functions.inc
+++ b/include/functions.inc
@@ -3022,7 +3022,7 @@ function cred_decrypt($input, $password)
   /************************* Inspired by Crypt/CBC.pm *******************************/
   $input = pack('H*', $input);
   if (substr($input, 0, 8) != 'Salted__') {
-    throw new Exception("Invalid hash header: expected 'Salted__', found '".substr($input, 0, 8)."'");
+    throw new FusionDirectoryException("Invalid hash header: expected 'Salted__', found '".substr($input, 0, 8)."'");
   }
   $salt   = substr($input, 8, 8);
   $input  = substr($input, 16);
diff --git a/plugins/addons/dashboard/class_dashBoard.inc b/plugins/addons/dashboard/class_dashBoard.inc
index 21a24d48ea77bfa3c20fbff1ff01bb343aabc181..56e0eba91fb9b010bdde0eb743252d40a8f3b72e 100644
--- a/plugins/addons/dashboard/class_dashBoard.inc
+++ b/plugins/addons/dashboard/class_dashBoard.inc
@@ -68,7 +68,7 @@ class dashboard extends simplePlugin
     foreach ($config->data['OBJECTS'] as $type => $infos) {
       try {
         $nb = objects::count($type);
-      } catch (Exception $e) {
+      } catch (FusionDirectoryException $e) {
         $nb = 0;
         trigger_error("Problem with $type:".$e->getMessage());
       }
diff --git a/setup/class_setupStep_Migrate.inc b/setup/class_setupStep_Migrate.inc
index 02d6f68c0a5ef56e00fcb92ae40af1b2370f97ec..b7f27772c73d4f5e060fb877f94b1049c12decac 100644
--- a/setup/class_setupStep_Migrate.inc
+++ b/setup/class_setupStep_Migrate.inc
@@ -44,7 +44,7 @@ array_to_ldif               - Create ldif output of an ldap result array
 
  ****************/
 
-class CheckFailedException extends Exception
+class CheckFailedException extends FusionDirectoryException
 {
   private $error;