diff --git a/odoo_openupgrade_wizard/tools/tools_postgres.py b/odoo_openupgrade_wizard/tools/tools_postgres.py
index 3df9b5f..819a236 100644
--- a/odoo_openupgrade_wizard/tools/tools_postgres.py
+++ b/odoo_openupgrade_wizard/tools/tools_postgres.py
@@ -116,19 +116,17 @@ def execute_sql_request(ctx, request, database="postgres"):
 
 
 def execute_psql_command(
-    ctx, request: str, database: str = "postgres", psql_args=None
+    ctx, request: str, database: str = None, psql_args: tuple = ()
 ):
     """Execute psql request in postgres container with psql_args on database"""
-    if psql_args and not isinstance(psql_args, str):
-        psql_args = " ".join(psql_args)
     container = get_postgres_container(ctx)
     command = (
         "psql"
         " --username=odoo"
-        " --dbname={database}"
-        ' --command "{request}"'
-        " {psql_args}"
-    ).format(database=database, request=request, psql_args=psql_args)
+        f" --dbname={database or 'postgres'}"
+        f' --command "{request}"'
+        f" {' '.join(psql_args)}"
+    )
     logger.debug(
         "Executing the following command in postgres container\n"
         "%s" % (command)