diff --git a/mailnews/base/macbuild/msgCoreIDL.mcp b/mailnews/base/macbuild/msgCoreIDL.mcp
index 4b12601b0e09..82e1e46ff5a0 100644
Binary files a/mailnews/base/macbuild/msgCoreIDL.mcp and b/mailnews/base/macbuild/msgCoreIDL.mcp differ