diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index ce043d7f16b..3cb4cc31093 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -5677,7 +5677,7 @@ function dol_getmypid()
  *                             			If param $mode is 1, can contains an operator <, > or = like "<10" or ">=100.5 < 1000"
  *                             			If param $mode is 2, can contains a list of id separated by comma like "1,3,4"
  * @param	integer			$mode		0=value is list of keywords, 1=value is a numeric test (Example ">5.5 <10"), 2=value is a list of id separated with comma (Example '1,3,4')
- * @param	integer			$nofirstand	1=Do now output the first 'AND'
+ * @param	integer			$nofirstand	1=Do not output the first 'AND'
  * @return 	string 			$res 		The statement to append to the SQL query
  */
 function natural_search($fields, $value, $mode=0, $nofirstand=0)
@@ -5692,6 +5692,9 @@ function natural_search($fields, $value, $mode=0, $nofirstand=0)
     {
     	$value=preg_replace('/([<>=]+)\s+([0-9'.preg_quote($langs->trans("DecimalSeparator"),'/').'\-])/','\1\2',$value);	// Clean string '< 10' into '<10' so we can the explode on space to get all tests to do
     }
+    
+    $value = preg_replace('/\s*\|\s*/','|', $value);
+    
     $crits = explode(' ', $value);
     $res = '';
     if (! is_array($fields)) $fields = array($fields);