diff --git a/heat/engine/parameters.py b/heat/engine/parameters.py
index 1ddbc9039..5ed37bfa3 100644
--- a/heat/engine/parameters.py
+++ b/heat/engine/parameters.py
@@ -170,8 +170,6 @@ class Schema(constr.Schema):
         else:
             return super(Schema, self).__getitem__(key)
 
-        raise KeyError(key)
-
 
 class Parameter(object):
     '''A template parameter.'''
diff --git a/heat/engine/properties.py b/heat/engine/properties.py
index 8c759083f..df595660b 100644
--- a/heat/engine/properties.py
+++ b/heat/engine/properties.py
@@ -193,8 +193,6 @@ class Schema(constr.Schema):
         else:
             return super(Schema, self).__getitem__(key)
 
-        raise KeyError(key)
-
 
 def schemata(schema_dicts):
     """