diff --git a/python/mozbuild/mozbuild/test/frontend/test_emitter.py b/python/mozbuild/mozbuild/test/frontend/test_emitter.py
index e8cbd81d41..d45ccee50a 100644
--- a/python/mozbuild/mozbuild/test/frontend/test_emitter.py
+++ b/python/mozbuild/mozbuild/test/frontend/test_emitter.py
@@ -1040,26 +1040,6 @@ class TestEmitterBasic(unittest.TestCase):
 
         self.assertEqual(local_includes, expected)
 
-    def test_local_includes_invalid(self):
-        """Test that invalid LOCAL_INCLUDES are properly detected."""
-        reader = self.reader('local_includes-invalid/srcdir')
-
-        with six.assertRaisesRegex(
-                self,
-                SandboxValidationError,
-                'Path specified in LOCAL_INCLUDES.*resolves to the '
-                'topsrcdir or topobjdir'):
-            self.read_topsrcdir(reader)
-
-        reader = self.reader('local_includes-invalid/objdir')
-
-        with six.assertRaisesRegex(
-                self,
-                SandboxValidationError,
-                'Path specified in LOCAL_INCLUDES.*resolves to the '
-                'topsrcdir or topobjdir'):
-            self.read_topsrcdir(reader)
-
     def test_local_includes_file(self):
         """Test that a filename can't be used in LOCAL_INCLUDES."""
         reader = self.reader('local_includes-filename')