diff --git a/docs/source/interface.rst b/docs/source/interface.rst
index 471bc45e1748786f0f5cbe6e5e5b25f23c9f8cdb..862919379aaa2e32b1d00e4074d61c220ea31f11 100644
--- a/docs/source/interface.rst
+++ b/docs/source/interface.rst
@@ -77,14 +77,12 @@ The following values are possible::
 ::
 
   { "name": "double-spend"
-  , "started": <iso8601 timestamp>
-  , "error-at": <iso8601 timestamp>
+  , "finished": <iso8601 timestamp>
   }
 
 ::
 
   { "name": "redeemed"
-  , "started": <iso8601 timestamp>
   , "finished": <iso8601 timestamp>
   , "token-count": <number>
   }