diff --git a/licensing/methods.py b/licensing/methods.py
index 0b4f5a5..f7b2ee0 100644
--- a/licensing/methods.py
+++ b/licensing/methods.py
@@ -1422,7 +1422,7 @@ def GetMachineCode(v=1):
                 machineGUID = Helpers.__read_registry_value(winreg.HKEY_LOCAL_MACHINE, r"SOFTWARE\Microsoft\Cryptography", "MachineGuid")
                 
                 if machineGUID != None and machineGUID != "":
-                    HelperMethods.get_SHA256(machineGUID)
+                    return HelperMethods.get_SHA256(machineGUID)
                 return None
             else:
                 return HelperMethods.get_SHA256(seed)
@@ -1464,6 +1464,9 @@ def IsOnRightMachine(license_key, is_floating_license = False, allow_overdraft=F
             current_mid = Helpers.GetMachineCode(v)
         else:
             current_mid = custom_machine_code
+
+        if current_mid is None:
+            return False
         
         if license_key.activated_machines == None:
             return False