diff --git a/jsonschema/validators.py b/jsonschema/validators.py
index 13a96647f..f3db1b978 100644
--- a/jsonschema/validators.py
+++ b/jsonschema/validators.py
@@ -333,7 +333,9 @@ def iter_errors(self, instance, _schema=None):
                             instance=instance,
                             schema=_schema,
                         )
-                        if k not in {u"if", u"$ref"}:
+                        if k == "additionalProperties" and v in (True, False):
+                            pass
+                        elif k not in {u"if", u"$ref"}:
                             error.schema_path.appendleft(k)
                         yield error
             finally: