diff --git a/mailnews/base/macbuild/msgCoreIDL.mcp b/mailnews/base/macbuild/msgCoreIDL.mcp
index 27de9bb29e82..66523aa6bdef 100644
Binary files a/mailnews/base/macbuild/msgCoreIDL.mcp and b/mailnews/base/macbuild/msgCoreIDL.mcp differ