diff --git a/src/GamCommands.txt b/src/GamCommands.txt
index 01d02a64..f1795144 100644
--- a/src/GamCommands.txt
+++ b/src/GamCommands.txt
@@ -1151,6 +1151,7 @@ gam calendar <CalendarItem> modify <CalendarSettings>+
 	lastPolicyFetchTime|
 	lastRegistrationTime|
 	lastStatusReportTime|
+	machineextensionpolicies|
 	machineName|
 	machinePolicies|
 	orgUnitPath|
diff --git a/src/gam/gapi/chromepolicy.py b/src/gam/gapi/chromepolicy.py
index 2acd0938..3bc1c78d 100644
--- a/src/gam/gapi/chromepolicy.py
+++ b/src/gam/gapi/chromepolicy.py
@@ -179,7 +179,7 @@ def build_schemas(svc=None, sfilter=None):
                                       if fdesc.get('field') == setting_name:
                                           for d in fdesc.get('knownValueDescriptions', []):
                                               if d['value'][prefix_len:] == an:
-                                                  setting_dict['descriptions'][i] = d['description']
+                                                  setting_dict['descriptions'][i] = d.get('description', '')
                                                   break
                                           break
                             break