diff --git a/thunderbird-mozconfig b/thunderbird-mozconfig
index 73d5bb6..31d957e 100644
--- a/thunderbird-mozconfig
+++ b/thunderbird-mozconfig
@@ -29,6 +29,7 @@ ac_add_options --enable-startup-notification
 ac_add_options --enable-gio
 ac_add_options --disable-gnomevfs
 ac_add_options --disable-gstreamer
+ac_add_options --enable-pie
 
 # lightning related
 ac_add_options --enable-calendar