diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index f212cec446..63d2ace93c 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -605,7 +605,7 @@ class VM(qtest.QEMUQtestMachine):
 
     def hmp(self, command_line: str, use_log: bool = False) -> QMPMessage:
         cmd = 'human-monitor-command'
-        kwargs = {'command-line': command_line}
+        kwargs: Dict[str, Any] = {'command-line': command_line}
         if use_log:
             return self.qmp_log(cmd, **kwargs)
         else: