diff --git a/src/sage/combinat/sf/k_dual.py b/src/sage/combinat/sf/k_dual.py
index 05b9d3db774..8112965b884 100644
--- a/src/sage/combinat/sf/k_dual.py
+++ b/src/sage/combinat/sf/k_dual.py
@@ -920,7 +920,7 @@ def __init__(self, kBoundedRing, prefix):
     __getitem__ = KBoundedQuotientBases.ParentMethods.__getitem__.__func__
     _repr_term = KBoundedQuotientBases.ParentMethods._repr_term.__func__
     _element_constructor_ = KBoundedQuotientBases.ParentMethods._element_constructor_.__func__
-    _element_constructor = _element_constructor_
+
 
 class kMonomial(KBoundedQuotientBasis):
     r"""
diff --git a/src/sage/combinat/sf/new_kschur.py b/src/sage/combinat/sf/new_kschur.py
index 6e98c06f06d..3dadf9665bd 100644
--- a/src/sage/combinat/sf/new_kschur.py
+++ b/src/sage/combinat/sf/new_kschur.py
@@ -1018,7 +1018,6 @@ def __init__(self, kBoundedRing):
     _repr_term = KBoundedSubspaceBases.ParentMethods._repr_term.__func__
     _convert_map_from_ = KBoundedSubspaceBases.ParentMethods._convert_map_from_.__func__
     _element_constructor_ = KBoundedSubspaceBases.ParentMethods._element_constructor_.__func__
-    _element_constructor = _element_constructor_
 
     def _repr_(self):
         """
@@ -1276,7 +1275,6 @@ def __init__(self, kBoundedRing):
     _convert_map_from_ =\
             KBoundedSubspaceBases.ParentMethods._convert_map_from_.__func__
     _element_constructor_ = KBoundedSubspaceBases.ParentMethods._element_constructor_.__func__
-    _element_constructor = _element_constructor_
 
     def _repr_(self):
         r"""
@@ -1392,7 +1390,6 @@ def __init__(self, kBoundedRing):
     _convert_map_from_ =\
             KBoundedSubspaceBases.ParentMethods._convert_map_from_.__func__
     _element_constructor_ = KBoundedSubspaceBases.ParentMethods._element_constructor_.__func__
-    _element_constructor = _element_constructor_
 
     def _repr_(self):
         """
@@ -1469,7 +1466,6 @@ def __init__(self, kBoundedRing):
     __getitem__ = KBoundedSubspaceBases.ParentMethods.__getitem__.__func__
     _repr_term = KBoundedSubspaceBases.ParentMethods._repr_term.__func__
     _element_constructor_ = KBoundedSubspaceBases.ParentMethods._element_constructor_.__func__
-    _element_constructor = _element_constructor_
 
     def _repr_(self):
         r"""