diff --git a/gulliver/system/class.dbMaintenance.php b/gulliver/system/class.dbMaintenance.php
index 0d68da8ec..d6ea58085 100755
--- a/gulliver/system/class.dbMaintenance.php
+++ b/gulliver/system/class.dbMaintenance.php
@@ -162,6 +162,7 @@ class DataBaseMaintenance
 
         $this->link = mysql_connect( $this->host, $this->user, $this->passwd );
         @mysql_query( "SET NAMES 'utf8';" );
+        @mysql_query( "SET FOREIGN_KEY_CHECKS=0;" );
         if (! $this->link) {
             throw new Exception( "Couldn't connect to host {$this->host} with user {$this->user}" );
         }
diff --git a/workflow/engine/classes/class.multipleFilesBackup.php b/workflow/engine/classes/class.multipleFilesBackup.php
index ce5da7952..fa955c7bc 100644
--- a/workflow/engine/classes/class.multipleFilesBackup.php
+++ b/workflow/engine/classes/class.multipleFilesBackup.php
@@ -193,6 +193,7 @@ class multipleFilesBackup
             CLI::logging( "> Connecting to system database in '$dbHost'\n" );
             $link = mysql_connect( $dbHost, $dbUser, $dbPass );
             @mysql_query( "SET NAMES 'utf8';" );
+            @mysql_query( "SET FOREIGN_KEY_CHECKS=0;" );
             if (! $link) {
                 throw new Exception( 'Could not connect to system database: ' . mysql_error() );
             }
diff --git a/workflow/engine/classes/class.wsTools.php b/workflow/engine/classes/class.wsTools.php
index e34d23d23..f1b5b39b5 100755
--- a/workflow/engine/classes/class.wsTools.php
+++ b/workflow/engine/classes/class.wsTools.php
@@ -1123,6 +1123,7 @@ class workspaceTools
             CLI::logging( "> Connecting to system database in '$dbHost'\n" );
             $link = mysql_connect( $dbHost, $dbUser, $dbPass );
             @mysql_query( "SET NAMES 'utf8';" );
+            @mysql_query( "SET FOREIGN_KEY_CHECKS=0;" );
             if (! $link) {
                 throw new Exception( 'Could not connect to system database: ' . mysql_error() );
             }
diff --git a/workflow/engine/classes/model/Content.php b/workflow/engine/classes/model/Content.php
index 2e2df381a..ac1c1193d 100755
--- a/workflow/engine/classes/model/Content.php
+++ b/workflow/engine/classes/model/Content.php
@@ -345,6 +345,7 @@ class Content extends BaseContent
 
         mysql_select_db( $workSpace->dbName, $link );
         mysql_query( "SET NAMES 'utf8';" );
+        mysql_query( "SET FOREIGN_KEY_CHECKS=0;" );
         mysql_query( 'SET OPTION SQL_BIG_SELECTS=1' );
         $result = mysql_unbuffered_query( $sql, $link );
         $list = array ();