diff --git a/kmip/pie/client.py b/kmip/pie/client.py
index 0205ea8..c9fd721 100644
--- a/kmip/pie/client.py
+++ b/kmip/pie/client.py
@@ -20,6 +20,7 @@ from kmip.core import enums
 from kmip.core import primitives
 from kmip.core import objects as cobjects
 
+from kmip.core.objects import Attribute
 from kmip.core.factories import attributes
 
 from kmip.core.attributes import CryptographicParameters
diff --git a/kmip/pie/objects.py b/kmip/pie/objects.py
index e0ab00d..1186fc9 100644
--- a/kmip/pie/objects.py
+++ b/kmip/pie/objects.py
@@ -657,7 +657,7 @@ class SymmetricKey(Key):
         'sqlite_autoincrement': True
     }
 
-    def __init__(self, algorithm, length, value, masks=None,
+    def __init__(self, algorithm, length, value, app_specific_info=None, masks=None,
                  name='Symmetric Key', key_wrapping_data=None):
         """
         Create a SymmetricKey.
@@ -690,6 +690,9 @@ class SymmetricKey(Key):
         if masks:
             self.cryptographic_usage_masks.extend(masks)
 
+        if app_specific_info:
+            self._application_specific_informations = app_specific_info
+
         # All remaining attributes are not considered part of the public API
         # and are subject to change.