diff --git a/winedefault.reg b/winedefault.reg
index 941cd7f84a2..630f3cb4531 100644
--- a/winedefault.reg
+++ b/winedefault.reg
@@ -278,6 +278,12 @@
 [HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Windows]
 "CSDVersion"=dword:00000600
 
+#
+# Entries for programs that read the registry to get Serial/Com Port info
+#
+[HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SerialComm]
+"Serial0"="COM1"
+
 #
 # Entries for Multimedia
 #