diff --git a/gwinc/struct.py b/gwinc/struct.py
index 25c82508af8cfd35764329900f1429348e900642..26594597436674ef31a2e6cf5d0b06a5e170cc31 100644
--- a/gwinc/struct.py
+++ b/gwinc/struct.py
@@ -96,7 +96,7 @@ class Struct(object):
         else:
             return self.__dict__[key]
 
-    def get(self, key, default):
+    def get(self, key, default=None):
         """Get a (possibly nested) value from the struct, or default.
 
         """