diff --git a/pyghmi/ipmi/oem/lenovo/handler.py b/pyghmi/ipmi/oem/lenovo/handler.py
index 1f305726..f1c1904b 100755
--- a/pyghmi/ipmi/oem/lenovo/handler.py
+++ b/pyghmi/ipmi/oem/lenovo/handler.py
@@ -328,6 +328,7 @@ class OEMHandler(generic.OEMHandler):
             command = firmware.get_categories()["firmware"]
             rsp = self.ipmicmd.xraw_command(**command["command"])
             return command["parser"](rsp["data"])
+        return ()
 
     def get_oem_capping_enabled(self):
         if self.has_tsm: