diff --git a/src/_pytest/nodes.py b/src/_pytest/nodes.py
index 869c36bbc65..b28c64c2a70 100644
--- a/src/_pytest/nodes.py
+++ b/src/_pytest/nodes.py
@@ -91,9 +91,12 @@ def __call__(cls, *args, **kwargs):
             sig = inspect.signature(cls.__init__)
             bsig = sig.bind(cls, *args, **kwargs)
             if "parent" not in bsig.arguments:
-                warnings.warn(
-                    NODE_USE_FROM_PARENT.format(name=cls.__name__), stacklevel=2
-                )
+                # XXX: handle DefinitionMock from tests.  Could also go through
+                # _create instead (or get fixed?)?
+                if not getattr(cls, "_pytest_skip_ctor_check", False):
+                    warnings.warn(
+                        NODE_USE_FROM_PARENT.format(name=cls.__name__), stacklevel=2
+                    )
         return super().__call__(*args, **kwargs)
 
 
diff --git a/testing/python/metafunc.py b/testing/python/metafunc.py
index ae3856ba7b1..cf1fa82e7d4 100644
--- a/testing/python/metafunc.py
+++ b/testing/python/metafunc.py
@@ -24,6 +24,7 @@ def __init__(self, names):
 
         @attr.s
         class DefinitionMock(python.FunctionDefinition):
+            _pytest_skip_ctor_check = True
             obj = attr.ib()
 
         names = fixtures.getfuncargnames(func)