diff --git a/htdocs/core/db/mssql.class.php b/htdocs/core/db/mssql.class.php
index f8eb9914cf7..9378cc20694 100644
--- a/htdocs/core/db/mssql.class.php
+++ b/htdocs/core/db/mssql.class.php
@@ -508,6 +508,7 @@ class DoliDBMssql
 	function plimit($limit=0,$offset=0)
 	{
 		global $conf;
+        if (empty($limit)) return "";
 		if ($limit < 0) $limit=$conf->liste_limit;
 		if ($offset > 0) return " LIMIT $offset,$limit ";
 		else return " LIMIT $limit ";
diff --git a/htdocs/core/db/mysql.class.php b/htdocs/core/db/mysql.class.php
index 7b22c8165c3..386624132f7 100644
--- a/htdocs/core/db/mysql.class.php
+++ b/htdocs/core/db/mysql.class.php
@@ -488,6 +488,7 @@ class DoliDBMysql
 	function plimit($limit=0,$offset=0)
 	{
 		global $conf;
+        if (empty($limit)) return "";
 		if ($limit < 0) $limit=$conf->liste_limit;
 		if ($offset > 0) return " LIMIT $offset,$limit ";
 		else return " LIMIT $limit ";
diff --git a/htdocs/core/db/mysqli.class.php b/htdocs/core/db/mysqli.class.php
index 6ea19ba8c11..7d9d67f839c 100644
--- a/htdocs/core/db/mysqli.class.php
+++ b/htdocs/core/db/mysqli.class.php
@@ -490,6 +490,7 @@ class DoliDBMysqli
     function plimit($limit=0,$offset=0)
     {
         global $conf;
+        if (empty($limit)) return "";
         if ($limit < 0) $limit=$conf->liste_limit;
         if ($offset > 0) return " LIMIT $offset,$limit ";
         else return " LIMIT $limit ";
diff --git a/htdocs/core/db/pgsql.class.php b/htdocs/core/db/pgsql.class.php
index df73e562e70..122a8e072ba 100644
--- a/htdocs/core/db/pgsql.class.php
+++ b/htdocs/core/db/pgsql.class.php
@@ -700,6 +700,7 @@ class DoliDBPgsql
 	function plimit($limit=0,$offset=0)
 	{
 		global $conf;
+        if (empty($limit)) return "";
 		if ($limit < 0) $limit=$conf->liste_limit;
 		if ($offset > 0) return " LIMIT ".$limit." OFFSET ".$offset." ";
 		else return " LIMIT $limit ";
diff --git a/htdocs/core/db/sqlite.class.php b/htdocs/core/db/sqlite.class.php
index 8725e9a3efe..3034a0f09f5 100644
--- a/htdocs/core/db/sqlite.class.php
+++ b/htdocs/core/db/sqlite.class.php
@@ -629,6 +629,7 @@ class DoliDBSqlite
     function plimit($limit=0,$offset=0)
     {
         global $conf;
+        if (empty($limit)) return "";
         if ($limit < 0) $limit=$conf->liste_limit;
         if ($offset > 0) return " LIMIT $offset,$limit ";
         else return " LIMIT $limit ";