diff --git a/src/rougail/user_data_yaml/__init__.py b/src/rougail/user_data_yaml/__init__.py
index ca3d462..78fc261 100644
--- a/src/rougail/user_data_yaml/__init__.py
+++ b/src/rougail/user_data_yaml/__init__.py
@@ -50,6 +50,7 @@ class RougailUserDataYaml:
         self.config = config
         self.errors = []
         self.warnings = []
+        self.source = _('the YAML file "{0}"')
 
     def run(
         self,
@@ -92,7 +93,7 @@ class RougailUserDataYaml:
                     allow_secrets_variables = True
                 user_data.append(
                     {
-                        "source": _('the YAML file "{0}"').format(filename),
+                        "source": self.source.format(filename),
                         "errors": self.errors,
                         "warnings": self.warnings,
                         "values": values,