diff --git a/tiramisu/option/dynoptiondescription.py b/tiramisu/option/dynoptiondescription.py
index e71e5e0..07b294e 100644
--- a/tiramisu/option/dynoptiondescription.py
+++ b/tiramisu/option/dynoptiondescription.py
@@ -111,13 +111,9 @@ class DynOptionDescription(OptionDescription):
                                                   self.impl_get_display_name()))
             else:
                 values_.append(val)
-        if __debug__:
-            if len(values_) > len(set(values_)):
-                extra_values = values_.copy()
-                for val in set(values_):
-                    extra_values.remove(val)
-                raise ValueError(_('DynOptionDescription suffixes return a list with '
-                                   f'multiple value "{extra_values}"'''))
+        if __debug__ and len(values_) > len(set(values_)):
+            raise ValueError(_(f'DynOptionDescription "{self._name}" suffixes return a list with '
+                               f'same values "{values_}"'''))
         return values_
 
     def impl_is_dynoptiondescription(self) -> bool: