diff --git a/AircraftConfig/acconfig.nas b/AircraftConfig/acconfig.nas
index bb7be90e..f3024977 100644
--- a/AircraftConfig/acconfig.nas
+++ b/AircraftConfig/acconfig.nas
@@ -161,7 +161,7 @@ setlistener("/sim/signals/fdm-initialized", func {
 	} 
 	mismatch_chk();
 	readSettings();
-	if (getprop("/systems/acconfig/options/revision") < current_revision) {
+	if (getprop("/systems/acconfig/options/revision") < current_revision and getprop("/systems/acconfig/mismatch-code") == "0x000") {
 		updated_dlg.open();
 	} else if (getprop("/systems/acconfig/out-of-date") != 1 and getprop("/systems/acconfig/mismatch-code") == "0x000" and getprop("/systems/acconfig/options/welcome-skip") != 1) {
 		welcome_dlg.open();
diff --git a/revision.txt b/revision.txt
index 1b4cea18..4abc8cfe 100644
--- a/revision.txt
+++ b/revision.txt
@@ -1 +1 @@
-4617
\ No newline at end of file
+4618
\ No newline at end of file