diff --git a/mozilla/browser/app/splash.rc b/mozilla/browser/app/splash.rc
index 79e28dfd187..cbd0d97648b 100644
--- a/mozilla/browser/app/splash.rc
+++ b/mozilla/browser/app/splash.rc
@@ -41,6 +41,7 @@
 
 1 24 "firefox.exe.manifest"
 
+IDI_APPICON ICON "firefox.ico"
 IDI_DOCUMENT ICON "document.ico"
 IDI_APPLICATION ICON "firefox.ico"
 
diff --git a/mozilla/xpfe/appshell/public/nsINativeAppSupportWin.idl b/mozilla/xpfe/appshell/public/nsINativeAppSupportWin.idl
index 77123fa0d56..816d7217cd8 100644
--- a/mozilla/xpfe/appshell/public/nsINativeAppSupportWin.idl
+++ b/mozilla/xpfe/appshell/public/nsINativeAppSupportWin.idl
@@ -58,6 +58,7 @@
 // DDE application name
 #define ID_DDE_APPLICATION_NAME 102
 
+#define IDI_APPICON 0
 #define IDI_DOCUMENT 1
 
 #endif
diff --git a/mozilla/xpfe/components/startup/public/nsINativeAppSupportWin.idl b/mozilla/xpfe/components/startup/public/nsINativeAppSupportWin.idl
index 77123fa0d56..816d7217cd8 100644
--- a/mozilla/xpfe/components/startup/public/nsINativeAppSupportWin.idl
+++ b/mozilla/xpfe/components/startup/public/nsINativeAppSupportWin.idl
@@ -58,6 +58,7 @@
 // DDE application name
 #define ID_DDE_APPLICATION_NAME 102
 
+#define IDI_APPICON 0
 #define IDI_DOCUMENT 1
 
 #endif