diff --git a/synchronicity/synchronizer.py b/synchronicity/synchronizer.py
index c829ae8..1be6482 100644
--- a/synchronicity/synchronizer.py
+++ b/synchronicity/synchronizer.py
@@ -258,11 +258,11 @@ def _translate_scalar_out(self, obj, interface):
                 return obj
 
     def _recurse_map(self, mapper, obj):
-        if type(obj) == list:
+        if isinstance(obj, list):
             return list(self._recurse_map(mapper, item) for item in obj)
-        elif type(obj) == tuple:
+        elif isinstance(obj, tuple):
             return tuple(self._recurse_map(mapper, item) for item in obj)
-        elif type(obj) == dict:
+        elif isinstance(obj, dict):
             return dict((key, self._recurse_map(mapper, item)) for key, item in obj.items())
         else:
             return mapper(obj)