diff --git a/htdocs/core/db/pgsql.class.php b/htdocs/core/db/pgsql.class.php
index 34297a7c1fc..d43aee672ca 100644
--- a/htdocs/core/db/pgsql.class.php
+++ b/htdocs/core/db/pgsql.class.php
@@ -380,7 +380,7 @@ class DoliDBPgsql
 		if (! $name) $name="postgres";    // When try to connect using admin user
 
 		// try first Unix domain socket (local)
-		if ((empty($host) || $host == "socket") && ! defined('NOLOCALSOCKETPGCONNECT'))
+		if ((! empty($host) && $host == "socket") && ! defined('NOLOCALSOCKETPGCONNECT'))
 		{
 			$con_string = "dbname='".$name."' user='".$login."' password='".$passwd."'";    // $name may be empty
 			$this->db = pg_connect($con_string);