diff --git a/client/fgfs/Protocol/fgcom-mumble.xml b/client/fgfs/Protocol/fgcom-mumble.xml
index 7538063c..bafc64a7 100644
--- a/client/fgfs/Protocol/fgcom-mumble.xml
+++ b/client/fgfs/Protocol/fgcom-mumble.xml
@@ -59,8 +59,9 @@
string
COM1_PBT=%s
/instrumentation/comm[0]/operable
-
+
+
com1-ptt
string
COM1_PTT=%s
@@ -103,7 +104,7 @@
string
COM2_PBT=%s
/instrumentation/comm[1]/operable
-
+
com2-ptt