diff --git a/addons/base_gengo/models/res_company.py b/addons/base_gengo/models/res_company.py
index d5409dcbd46..5b1a8a788a4 100644
--- a/addons/base_gengo/models/res_company.py
+++ b/addons/base_gengo/models/res_company.py
@@ -7,7 +7,7 @@ from odoo import fields, models
 class res_company(models.Model):
     _inherit = "res.company"
 
-    gengo_private_key = fields.Text(string="Gengo Private Key", copy=False, groups="base.group_system")
+    gengo_private_key = fields.Char(string="Gengo Private Key", copy=False, groups="base.group_system")
     gengo_public_key = fields.Text(string="Gengo Public Key", copy=False, groups="base.group_user")
     gengo_comment = fields.Text(string="Comments", groups="base.group_user",
       help="This comment will be automatically be enclosed in each an every request sent to Gengo")
diff --git a/addons/base_gengo/models/res_config_settings.py b/addons/base_gengo/models/res_config_settings.py
index 78161d21429..7482bd70234 100644
--- a/addons/base_gengo/models/res_config_settings.py
+++ b/addons/base_gengo/models/res_config_settings.py
@@ -7,7 +7,7 @@ from odoo import api, models, fields
 class ResConfigSettings(models.TransientModel):
     _inherit = 'res.config.settings'
 
-    gengo_private_key = fields.Text(string="Gengo Private Key", related="company_id.gengo_private_key", readonly=False)
+    gengo_private_key = fields.Char(string="Gengo Private Key", related="company_id.gengo_private_key", readonly=False)
     gengo_public_key = fields.Text(string="Gengo Public Key", related="company_id.gengo_public_key", readonly=False)
     gengo_comment = fields.Text(string="Comments", related="company_id.gengo_comment",
       help="This comment will be automatically be enclosed in each an every request sent to Gengo")