diff --git a/importlib_metadata/__init__.py b/importlib_metadata/__init__.py
index 9f5bf347..d87ff082 100644
--- a/importlib_metadata/__init__.py
+++ b/importlib_metadata/__init__.py
@@ -209,6 +209,10 @@ def matches(self, **params):
         attrs = (getattr(self, param) for param in params)
         return all(map(operator.eq, params.values(), attrs))
 
+    def _asdict(self):
+        # override _asdict, broken by custom __iter__.
+        return {key: getattr(self, key) for key in self._fields}
+
 
 class DeprecatedList(list):
     """