diff --git a/html/admin/sql/patch/upgrade4.sql b/html/admin/sql/patch/upgrade4.sql
index 54ac357d1..d794f828d 100644
--- a/html/admin/sql/patch/upgrade4.sql
+++ b/html/admin/sql/patch/upgrade4.sql
@@ -42,3 +42,6 @@ delete from centralized;
 create sequence s_internal;
 select setval('s_centralized',1,false);
 update jrnx set j_centralized='f';
+alter table parm_periode add p_central bool;
+alter table parm_periode alter p_central set default false;
+update parm_periode set p_central ='f';
diff --git a/include/central_inc.php b/include/central_inc.php
index 7f28620d3..eb03bcba0 100644
--- a/include/central_inc.php
+++ b/include/central_inc.php
@@ -1,6 +1,4 @@
 <?
-
-
 /*
  *   This file is part of PhpCompta.
  *
@@ -136,7 +134,9 @@ $sql="insert into centralized( c_j_id,
       if ($Res2==false) { rollback($p_cn); EndSql($p_cn); return ERROR;}
 
    }
- 
+   if ( ExecSql($p_cn,"update parm_periode set p_central=true where p_id=$p_periode") == false)
+     { rollback($p_cn); EndSql($p_cn); return ERROR;}
+
  
  
  
diff --git a/include/preference.php b/include/preference.php
index 22dccbed8..6b0768ea7 100644
--- a/include/preference.php
+++ b/include/preference.php
@@ -72,31 +72,24 @@ function FormPeriodeMult($p_cn)
  */ 
 function FormPeriode($p_cn,$l_default=0,$p_type=OPEN,$p_suff="")
 {
-
-  if ($p_type==CLOSED) {
-    $sql_closed="p_closed=true";
-    $sql="select p_id,to_char(p_start,'DD.MM.YYYY') as p_start,
-                    to_char(p_end,'DD.MM.YYYY') as p_end 
-        from parm_periode where 
-           $sql_closed order by p_exercice,p_start";
-
-  }
-  if ($p_type==OPEN) {
+  switch ($p_type) {
+  case CLOSED:
+    $sql_closed="p_closed=true and p_central = false ";
+    break;
+  case OPEN:
     $sql_closed="p_closed=false";
-    $sql="select p_id,to_char(p_start,'DD.MM.YYYY') as p_start,
-                    to_char(p_end,'DD.MM.YYYY') as p_end 
-        from parm_periode where 
-           $sql_closed order by p_exercice,p_start";
-
+    break;
+  case NOTCENTRALIZED:
+    $sql_closed="p_closed=true and p_central = false ";
+    break;
+  default:
+    error("invalide p_type in __FILE__#__LINE__");
   }
-  if ($p_type==NOTCENTRALIZED) {
   $sql="select p_id,to_char(p_start,'DD.MM.YYYY') as p_start,
                     to_char(p_end,'DD.MM.YYYY') as p_end 
         from parm_periode where 
-           p_closed=true and p_id not in (
-          select c_periode from centralized)
+         $sql_closed 
           order by p_exercice,p_start";
-  }
   $Res=ExecSql($p_cn,$sql);
   $Max=pg_NumRows($Res);
   if ( $Max == 0 ) return null;