diff --git a/spec/test/features/control/append/error_malformed.feature b/spec/test/features/control/append/error_malformed.feature
index f0120ee..4c4f9f0 100644
--- a/spec/test/features/control/append/error_malformed.feature
+++ b/spec/test/features/control/append/error_malformed.feature
@@ -8,7 +8,7 @@ Feature: Kapow! server reject append requests with malformed JSON bodies.
     the server will respond with a bad request error.
 
     Given I have a running Kapow! server
-    When I try to append with this JSON document:
+    When I try to append with this malformed JSON document:
       """
       {
         "method" "GET",
diff --git a/spec/test/features/steps/steps.py b/spec/test/features/steps/steps.py
index 16edd2d..191d927 100644
--- a/spec/test/features/steps/steps.py
+++ b/spec/test/features/steps/steps.py
@@ -167,6 +167,7 @@ def step_impl(context):
     raise NotImplementedError('STEP: When I insert the route')
 
 
+@when('I try to append with this malformed JSON document')
 @when('I try to append with this JSON document')
 def step_impl(context):
     raise NotImplementedError('STEP: When I try to append with this JSON document')