diff --git a/src/rougail/error.py b/src/rougail/error.py
index 6f237b843..53f8b3f10 100644
--- a/src/rougail/error.py
+++ b/src/rougail/error.py
@@ -83,8 +83,8 @@ class NotFoundError(Exception):
 ## ---- specific exceptions ----
 
 class VariableCalculationDependencyError(Exception):
-    """When an 'optional=true' attribute is set, and 
-    the target variable doesn't exists.
+    """When an attribute is set, and 
+    the target of this attribute doesn't exists.
     """
     def __init__(self, msg, errno, xmlfiles):
         if xmlfiles:
diff --git a/src/rougail/object_model.py b/src/rougail/object_model.py
index 2d2cfa49c..00b5aea25 100644
--- a/src/rougail/object_model.py
+++ b/src/rougail/object_model.py
@@ -351,9 +351,6 @@ class VariableCalculation(Calculation):
             if self.optional:
                 msg = f'the dependent variable was not found "{self.optional}" for variable "{self.path}"'
                 raise VariableCalculationDependencyError(msg, 90, self.xmlfiles)
-            else:
-                msg = f'Variable not found "{self.variable}" for attribute "{self.attribute_name}" for variable "{self.path}"'
-                raise DictConsistencyError(msg, 88, self.xmlfiles)
         if not isinstance(variable, objectspace.variable):
             # FIXME remove the pfff
             raise Exception("pfff it's a family")
diff --git a/tests/dictionaries/90_optional_parameter_in_variable_default/dictionaries/rougail/00-base.yml b/tests/dictionaries/90_optional_parameter_in_variable_default/dictionaries/rougail/00-base.yml
index b65bc9e7d..4a017adc3 100644
--- a/tests/dictionaries/90_optional_parameter_in_variable_default/dictionaries/rougail/00-base.yml
+++ b/tests/dictionaries/90_optional_parameter_in_variable_default/dictionaries/rougail/00-base.yml
@@ -1,3 +1,4 @@
+---
 version: 1.1
 #my_variable:
 #  multi: true
diff --git a/tests/dictionaries/90_optional_parameter_in_variable_exists/dictionaries/rougail/00-base.yml b/tests/dictionaries/90_optional_parameter_in_variable_exists/dictionaries/rougail/00-base.yml
index 382366bc4..61cf089c9 100644
--- a/tests/dictionaries/90_optional_parameter_in_variable_exists/dictionaries/rougail/00-base.yml
+++ b/tests/dictionaries/90_optional_parameter_in_variable_exists/dictionaries/rougail/00-base.yml
@@ -1,3 +1,4 @@
+---
 version: 1.1
 my_variable:
   multi: true