diff --git a/htdocs/core/db/pgsql.class.php b/htdocs/core/db/pgsql.class.php
index 610f9925546..fb18ed0f161 100644
--- a/htdocs/core/db/pgsql.class.php
+++ b/htdocs/core/db/pgsql.class.php
@@ -1225,7 +1225,7 @@ class DoliDBPgsql extends DoliDB
 	{
 		// phpcs:enable
 		$sql = "ALTER TABLE ".$table;
-		$sql .= " ALTER COLUMN '".$this->escape($field_name)."' TYPE ".$field_desc['type'];
+		$sql .= " ALTER COLUMN ".$this->escape($field_name)." TYPE ".$field_desc['type'];
 		if (preg_match("/^[^\s]/i", $field_desc['value'])) {
 			if (!in_array($field_desc['type'], array('smallint', 'int', 'date', 'datetime')) && $field_desc['value']) {
 				$sql .= "(".$field_desc['value'].")";