diff --git a/AircraftConfig/acconfig.nas b/AircraftConfig/acconfig.nas
index 60ff6e85..4d091169 100644
--- a/AircraftConfig/acconfig.nas
+++ b/AircraftConfig/acconfig.nas
@@ -98,7 +98,7 @@ setprop("/systems/acconfig/options/iesi-rate", 1);
 setprop("/systems/acconfig/options/sound/interior-volume", 1);
 setprop("/systems/acconfig/options/sound/exterior-volume", 1);
 setprop("/systems/acconfig/options/sound/wing-volume", 1);
-setprop("/sim/sound/avionics-volume", 1);
+setprop("/systems/acconfig/options/sound/avionics-volume", 1);
 setprop("/systems/acconfig/options/sound/effects-volume", 1);
 setprop("/systems/acconfig/options/sound/mechanical-volume", 1);
 setprop("/systems/acconfig/options/autopush/show-route", 1);
diff --git a/revision.txt b/revision.txt
index f1b95449..739f0db1 100644
--- a/revision.txt
+++ b/revision.txt
@@ -1 +1 @@
-4799
\ No newline at end of file
+4800
\ No newline at end of file