diff --git a/conf/05-system-external-commands.conf b/conf/05-system-external-commands.conf
index ee45250..d7834ba 100644
--- a/conf/05-system-external-commands.conf
+++ b/conf/05-system-external-commands.conf
@@ -28,15 +28,15 @@ rpm_install="sudo rpm -hUv"
 rpm_install_force="sudo rpm -hUv --force --nodeps"
 
 # Never install packages matching this regular expression
-# - default value='' (can be for instance '-apidocs-')
-rpm_install_noinstall_mask=''
+# - default value='-apidocs-'
+rpm_install_noinstall_mask='-apidocs-'
 
 # Mask that identify packages providing localization...
 # - default value='-i18n-|-help-'
 rpm_install_l10n_pck_mask='-i18n-|-help-|-langpack-|langpacks-'
 # ...and only install localization packages matching this regular expression
-# - default value='.*' (can be for instance 'it|pl')
-rpm_install_l10n_pck_allow_lang_mask='.*'
+# - default value='en' (can be for instance 'it|pl')
+rpm_install_l10n_pck_allow_lang_mask='en'
 
 # Options passed to rpm when installing a source rpm (srpm)
 # - default value='--nodeps'