diff --git a/thunderbird.spec b/thunderbird.spec
index aa56459..03e94b7 100644
--- a/thunderbird.spec
+++ b/thunderbird.spec
@@ -634,6 +634,8 @@ chmod a-x third_party/rust/ash/src/extensions/nv/*.rs
 # install lightning langpacks
 
 %build
+# Disable LTO to work around rhbz#1883904
+%define _lto_cflags %{nil}
 ulimit -a
 free
 #set -e