diff --git a/jedi/evaluate/finder.py b/jedi/evaluate/finder.py
index fadcd6b3..d7326050 100644
--- a/jedi/evaluate/finder.py
+++ b/jedi/evaluate/finder.py
@@ -329,7 +329,8 @@ class NameFinder(object):
         if doc_params:
             return doc_params
 
-        if not param.is_generated:
+        if not isinstance(param, ExecutedParam):
+            print(param)
             # Param owns no information itself.
             res_new += dynamic.search_params(evaluator, param)
             if not res_new:
diff --git a/jedi/evaluate/param.py b/jedi/evaluate/param.py
index bdc42637..911e9bf8 100644
--- a/jedi/evaluate/param.py
+++ b/jedi/evaluate/param.py
@@ -119,7 +119,6 @@ class ExecutedParam(pr.Param):
                     setattr(instance, name, getattr(param, name))
 
         instance.original_param = param
-        instance.is_generated = True
         instance.parent = parent
         instance.var_args = var_args
         return instance
@@ -133,6 +132,10 @@ class ExecutedParam(pr.Param):
                 types.append(v)
         return types
 
+    @property
+    def position_nr(self):
+        return self.original_param.position_nr
+
 
 def _get_calling_var_args(evaluator, var_args):
     old_var_args = None