diff --git a/server_environment_ir_config_parameter/views/view_ir_config_parameter.xml b/server_environment_ir_config_parameter/views/view_ir_config_parameter.xml
index ccc3bec..709c386 100644
--- a/server_environment_ir_config_parameter/views/view_ir_config_parameter.xml
+++ b/server_environment_ir_config_parameter/views/view_ir_config_parameter.xml
@@ -24,10 +24,10 @@ License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
                 <field name="is_environment" />
             </field>
             <field name="key" position="attributes">
-                <attribute name="readonly">'is_environment'</attribute>
+                <attribute name="readonly">is_environment</attribute>
             </field>
             <field name="value" position="attributes">
-                <attribute name="readonly">'is_environment'</attribute>
+                <attribute name="readonly">is_environment</attribute>
             </field>
         </field>
     </record>