diff --git a/ChangeLog b/ChangeLog
index 28c424736d0..8a7c97adf97 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -28,7 +28,8 @@ For developers:
 - Renamed some database fields, code variables and parameters from french to english.
 - First change to manage margins on contracts.
 - Add hook getFormMail.
-
+- Function plimit of databases drivers accept -1 as value (it means default value set
+  into conf->liste_limit).
 For translators:
 - Update language files.
 
diff --git a/htdocs/core/db/mssql.class.php b/htdocs/core/db/mssql.class.php
index cfa8e858f70..f8eb9914cf7 100644
--- a/htdocs/core/db/mssql.class.php
+++ b/htdocs/core/db/mssql.class.php
@@ -499,16 +499,16 @@ class DoliDBMssql
 
 
 	/**
-	 *	Define limits of request
-	 *
-	 *	@param	int		$limit      nombre maximum de lignes retournees
-	 *	@param	int		$offset     numero de la ligne a partir de laquelle recuperer les ligne
-	 *	@return	string      		chaine exprimant la syntax sql de la limite
+     *	Define limits and offset of request
+     *
+     *	@param	int		$limit      Maximum number of lines returned (-1=conf->liste_limit, 0=no limit)
+     *	@param	int		$offset     Numero of line from where starting fetch
+     *	@return	string      		String with SQL syntax to add a limit and offset
 	 */
 	function plimit($limit=0,$offset=0)
 	{
 		global $conf;
-		if (! $limit) $limit=$conf->liste_limit;
+		if ($limit < 0) $limit=$conf->liste_limit;
 		if ($offset > 0) return " LIMIT $offset,$limit ";
 		else return " LIMIT $limit ";
 	}
diff --git a/htdocs/core/db/mysql.class.php b/htdocs/core/db/mysql.class.php
index 81d5d7de4ff..7b22c8165c3 100644
--- a/htdocs/core/db/mysql.class.php
+++ b/htdocs/core/db/mysql.class.php
@@ -479,16 +479,16 @@ class DoliDBMysql
 
 
 	/**
-	 *	Define limits of request
-	 *
-	 *	@param	int		$limit      nombre maximum de lignes retournees
-	 *	@param	int		$offset     numero de la ligne a partir de laquelle recuperer les ligne
-	 *	@return	string      		chaine exprimant la syntax sql de la limite
+     *	Define limits and offset of request
+     *
+     *	@param	int		$limit      Maximum number of lines returned (-1=conf->liste_limit, 0=no limit)
+     *	@param	int		$offset     Numero of line from where starting fetch
+     *	@return	string      		String with SQL syntax to add a limit and offset
 	 */
 	function plimit($limit=0,$offset=0)
 	{
 		global $conf;
-		if (! $limit) $limit=$conf->liste_limit;
+		if ($limit < 0) $limit=$conf->liste_limit;
 		if ($offset > 0) return " LIMIT $offset,$limit ";
 		else return " LIMIT $limit ";
 	}
diff --git a/htdocs/core/db/mysqli.class.php b/htdocs/core/db/mysqli.class.php
index 5ccdb661ec2..6ea19ba8c11 100644
--- a/htdocs/core/db/mysqli.class.php
+++ b/htdocs/core/db/mysqli.class.php
@@ -481,16 +481,16 @@ class DoliDBMysqli
 
 
     /**
-     *	Defini les limites de la requete
+     *	Define limits and offset of request
      *
-     *	@param	int		$limit      nombre maximum de lignes retournees
-     *	@param	int		$offset     numero de la ligne a partir de laquelle recuperer les ligne
-     *	@return	string      		chaine exprimant la syntax sql de la limite
+     *	@param	int		$limit      Maximum number of lines returned (-1=conf->liste_limit, 0=no limit)
+     *	@param	int		$offset     Numero of line from where starting fetch
+     *	@return	string      		String with SQL syntax to add a limit and offset
      */
     function plimit($limit=0,$offset=0)
     {
         global $conf;
-        if (! $limit) $limit=$conf->liste_limit;
+        if ($limit < 0) $limit=$conf->liste_limit;
         if ($offset > 0) return " LIMIT $offset,$limit ";
         else return " LIMIT $limit ";
     }
diff --git a/htdocs/core/db/pgsql.class.php b/htdocs/core/db/pgsql.class.php
index 2c05625e383..df73e562e70 100644
--- a/htdocs/core/db/pgsql.class.php
+++ b/htdocs/core/db/pgsql.class.php
@@ -691,16 +691,16 @@ class DoliDBPgsql
 
 
 	/**
-	 * Defini les limites de la requete
-	 *
-	 * @param	int		$limit      nombre maximum de lignes retournees
-	 * @param	int		$offset     numero de la ligne a partir de laquelle recuperer les lignes
-	 * @return	string      		chaine exprimant la syntax sql de la limite
+     *	Define limits and offset of request
+     *
+     *	@param	int		$limit      Maximum number of lines returned (-1=conf->liste_limit, 0=no limit)
+     *	@param	int		$offset     Numero of line from where starting fetch
+     *	@return	string      		String with SQL syntax to add a limit and offset
 	 */
 	function plimit($limit=0,$offset=0)
 	{
 		global $conf;
-		if (! $limit) $limit=$conf->liste_limit;
+		if ($limit < 0) $limit=$conf->liste_limit;
 		if ($offset > 0) return " LIMIT ".$limit." OFFSET ".$offset." ";
 		else return " LIMIT $limit ";
 	}
diff --git a/htdocs/core/db/sqlite.class.php b/htdocs/core/db/sqlite.class.php
index 4cc217d24ad..8725e9a3efe 100644
--- a/htdocs/core/db/sqlite.class.php
+++ b/htdocs/core/db/sqlite.class.php
@@ -620,16 +620,16 @@ class DoliDBSqlite
 
 
 	/**
-	 *	Define limits of request
-	 *
-	 *	@param	int		$limit      nombre maximum de lignes retournees
-	 *	@param	int		$offset     numero de la ligne a partir de laquelle recuperer les ligne
-	 *	@return	string      		chaine exprimant la syntax sql de la limite
+     *	Define limits and offset of request
+     *
+     *	@param	int		$limit      Maximum number of lines returned (-1=conf->liste_limit, 0=no limit)
+     *	@param	int		$offset     Numero of line from where starting fetch
+     *	@return	string      		String with SQL syntax to add a limit and offset
 	 */
     function plimit($limit=0,$offset=0)
     {
         global $conf;
-        if (! $limit) $limit=$conf->liste_limit;
+        if ($limit < 0) $limit=$conf->liste_limit;
         if ($offset > 0) return " LIMIT $offset,$limit ";
         else return " LIMIT $limit ";
     }