--- a/misc.py
+++ b/misc.py
@@ -1818,16 +1818,18 @@ def generateBranchObjects(config, name, 
                 mobile_l10n_scheduler_name = '%s-%s-l10n' % (name, platform)
                 mobile_l10n_builders = []
                 builder_env = platform_env.copy()
                 for n in range(1, int(pf['l10n_chunks']) + 1):
                     builddir = '%s-%s-l10n_%s' % (name, platform, str(n))
                     builderName = "%s l10n nightly-%s" % (pf['base_name'], n)
                     mobile_l10n_builders.append(builderName)
                     extra_args = ['--cfg',
+                                  config['mozharness_configs']['single_locale_environment'],
+                                  '--cfg',
                                   'single_locale/%s_%s.py' % (name, platform),
                                   '--cfg',
                                   config['mozharness_configs']['balrog'],
                                   '--total-chunks', str(pf['l10n_chunks']),
                                   '--this-chunk', str(n)]
                     signing_servers = secrets.get(
                         pf.get('nightly_signing_servers'))
                     factory = SigningScriptFactory(