diff --git a/thunderbird-mozconfig b/thunderbird-mozconfig
index 6a5f711..003cad3 100644
--- a/thunderbird-mozconfig
+++ b/thunderbird-mozconfig
@@ -17,7 +17,7 @@ ac_add_options --enable-js-shell
 ac_add_options --with-unsigned-addon-scopes=app,system
 ac_add_options --without-wasm-sandboxed-libraries
 ac_add_options --disable-bootstrap
-
+ac_add_options --without-sysroot