diff --git a/extra/firefox/PKGBUILD b/extra/firefox/PKGBUILD
index db3f8bc97..ee79a4c92 100644
--- a/extra/firefox/PKGBUILD
+++ b/extra/firefox/PKGBUILD
@@ -5,6 +5,7 @@
 # ALARM: Kevin Mihelich <kevin@archlinuxarm.org>
 #  - mozconfig changes for ARM
 #  - revert change for clang that breaks gcc build on ARM
+#  - disable rust lto for v7
 
 buildarch=12
 highmem=1
@@ -111,6 +112,7 @@ END
     # https://bugzilla.redhat.com/show_bug.cgi?id=1641623
     echo "ac_add_options --disable-av1" >> .mozconfig
     MAKEFLAGS="-j1"
+    sed -i '/cargo_rustc_flags += -Clto/d' config/makefiles/rust.mk
   elif [[ $CARCH == "aarch64" ]]; then
     echo 'ac_add_options --enable-rust-simd' >> .mozconfig
   fi