diff --git a/lib/roles/device/plugins/input.js b/lib/roles/device/plugins/input.js
index cb4ff473..d2ef889d 100644
--- a/lib/roles/device/plugins/input.js
+++ b/lib/roles/device/plugins/input.js
@@ -476,7 +476,8 @@ module.exports = syrup.serial()
 
     function runAgentCommand(type, cmd) {
       agent.writer.write(new apk.wire.Envelope(
-        type
+        null
+      , type
       , cmd.encodeNB()
       ).encodeNB())
     }