diff --git a/core/src/trezor/workflow.py b/core/src/trezor/workflow.py
index 9dc295db35..1252a1bf5f 100644
--- a/core/src/trezor/workflow.py
+++ b/core/src/trezor/workflow.py
@@ -27,6 +27,7 @@ ALLOW_WHILE_LOCKED = (
     MessageType.DoPreauthorized,
     MessageType.WipeDevice,
     MessageType.SetBusy,
+    MessageType.Ping,
 )