diff -r b70ce330958c -r 0eaac248c728 MozillaFirefox/MozillaFirefox.spec
--- a/MozillaFirefox/MozillaFirefox.spec	Sun Jun 10 16:57:31 2018 +0200
+++ b/MozillaFirefox/MozillaFirefox.spec	Sun Jun 10 16:58:15 2018 +0200
@@ -417,6 +417,7 @@
 install -m 644 %{SOURCE9} %{buildroot}%{progdir}/browser/defaults/preferences/firefox.js
 # install additional locales
 %if %localize
+mkdir -p %{buildroot}%{progdir}/browser/extensions
 truncate -s 0 %{_tmppath}/translations.{common,other}
 sed -r '/^(ja-JP-mac|en-US|)$/d;s/ .*$//' $RPM_BUILD_DIR/%{source_prefix}/browser/locales/shipped-locales \
     | xargs -P 8 -n 1 -I {} /bin/sh -c '
@@ -575,11 +576,9 @@
 %dir %{progdir}
 %dir %{progdir}/browser/
 %dir %{progdir}/browser/chrome/
-%dir %{progdir}/browser/extensions/
 %{progdir}/browser/defaults
 %{progdir}/browser/features/
 %{progdir}/browser/chrome/icons
-%{progdir}/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}.xpi
 %{progdir}/browser/blocklist.xml
 %{progdir}/browser/chrome.manifest
 %{progdir}/browser/omni.ja