diff --git a/src/rougail/output_exporter/__init__.py b/src/rougail/output_exporter/__init__.py
index 4d60b54..d003932 100644
--- a/src/rougail/output_exporter/__init__.py
+++ b/src/rougail/output_exporter/__init__.py
@@ -72,6 +72,7 @@ class RougailOutputExporter:
                 self.errors.append(f'  - {option.description()}')
 
     def exporter(self) -> bool:
+        self.conf.property.read_write()
         self.mandatory()
         if self.read_write:
             self.conf.property.read_write()