diff --git a/src/Mod/Part/CMakeLists.txt b/src/Mod/Part/CMakeLists.txt
index 2e0b77a806..3e69359e06 100644
--- a/src/Mod/Part/CMakeLists.txt
+++ b/src/Mod/Part/CMakeLists.txt
@@ -53,6 +53,7 @@ set(CompoundTools_Scripts
 set(Part_tests
     parttests/__init__.py
     parttests/part_test_objects.py
+    parttests/regression_tests.py
 )
 
 add_custom_target(PartScripts ALL SOURCES
diff --git a/src/Mod/Part/TestPartApp.py b/src/Mod/Part/TestPartApp.py
index 0b4d08ee31..cf88dd1d0a 100644
--- a/src/Mod/Part/TestPartApp.py
+++ b/src/Mod/Part/TestPartApp.py
@@ -19,11 +19,13 @@
 #   USA                                                                   *
 #**************************************************************************
 
-import FreeCAD, os, sys, unittest, Part
+import FreeCAD, unittest, Part
 import copy 
 from FreeCAD import Units
 App = FreeCAD
 
+from parttests.regression_tests import RegressionTests
+
 #---------------------------------------------------------------------------
 # define the test cases to test the FreeCAD Part module
 #---------------------------------------------------------------------------
diff --git a/src/Mod/Part/parttests/regression_tests.py b/src/Mod/Part/parttests/regression_tests.py
new file mode 100644
index 0000000000..9f6b2e1bdf
--- /dev/null
+++ b/src/Mod/Part/parttests/regression_tests.py
@@ -0,0 +1,22 @@
+from FreeCAD import Vector
+import Part
+
+import unittest
+
+class RegressionTests(unittest.TestCase):
+
+    @unittest.skip("issue 4456")
+    def test_issue_4456(self):
+        """
+        0004456: Regression : Part.Plane.Intersect do not accept plane as argument
+        """
+        p1 = Part.Plane()
+        p2 = Part.Plane(Vector(0, 0, 0), Vector(1, 0, 0))
+
+        result = p1.intersect(p2)
+        line = result.pop()
+        self.assertEqual(line.Location, Vector(0, 0, 0))
+        self.assertEqual(line.Direction, Vector(0, 1, 0))
+        # We should now have empty list...
+        with self.assertRaises(IndexError):
+            result.pop()