diff --git a/mozilla/modules/libpref/macbuild/libprefIDL.mcp b/mozilla/modules/libpref/macbuild/libprefIDL.mcp
index afa8861ea9b..4f1788c05ac 100644
Binary files a/mozilla/modules/libpref/macbuild/libprefIDL.mcp and b/mozilla/modules/libpref/macbuild/libprefIDL.mcp differ