diff --git a/test-packages/qubesadmin/exc.py b/test-packages/qubesadmin/exc.py
index 2f79e31..023ba21 100644
--- a/test-packages/qubesadmin/exc.py
+++ b/test-packages/qubesadmin/exc.py
@@ -36,3 +36,6 @@ class BackupAlreadyRunningError(BaseException):
 
 class QubesDaemonCommunicationError(BaseException):
     pass
+
+class QubesValueError(BaseException):
+    pass