diff --git a/extra/thunderbird/PKGBUILD b/extra/thunderbird/PKGBUILD
index 8705d25ac..ee65a65c5 100644
--- a/extra/thunderbird/PKGBUILD
+++ b/extra/thunderbird/PKGBUILD
@@ -7,6 +7,7 @@
 
 # ALARM: Kevin Mihelich <kevin@archlinuxarm.org>
 #  - mozconfig changes for ARM
+#  - disable rust lto for v7
 
 buildarch=12
 highmem=1
@@ -81,6 +82,7 @@ prepare() {
     MAKEFLAGS="-j2"
     CFLAGS=`echo $CFLAGS | sed -e 's/vfpv3-d16/neon/'`
     CXXFLAGS="$CFLAGS"
+    sed -i '/cargo_rustc_flags += -Clto/d' config/makefiles/rust.mk
   fi
 
   echo 'ac_add_options --enable-optimize="-g0 -O2"' >> .mozconfig