diff --git a/winedefault.reg b/winedefault.reg
index 30b62db63a..f28465ffd7 100644
--- a/winedefault.reg
+++ b/winedefault.reg
@@ -70,6 +70,7 @@
 "CommonFilesDir"="C:\\Program Files\\Common Files"
 "RegisteredOrganization"="Change preferred organization in ~/.wine/system.reg"
 "RegisteredOwner"="Change preferred owner in ~/.wine/system.reg"
+"FirstInstallDateTime"=hex:21,81,7c,23
 
 # Font name to font file mappings
 [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Fonts]