--- a/testing/mozharness/scripts/desktop_l10n.py
+++ b/testing/mozharness/scripts/desktop_l10n.py
@@ -351,18 +351,26 @@ class DesktopSingleLocale(LocalesMixin, 
     def query_bootstrap_env(self):
         """returns the env for repacks"""
         if self.bootstrap_env:
             return self.bootstrap_env
         config = self.config
         replace_dict = self.query_abs_dirs()
 
         replace_dict['en_us_binary_url'] = config.get('en_us_binary_url')
+        self.read_buildbot_config()
+        # Override en_us_binary_url if packageUrl is passed as a property from
+        # the en-US build
+        if self.buildbot_config["properties"].get("packageUrl"):
+            packageUrl = self.buildbot_config["properties"]["packageUrl"]
+            # trim off the filename, the build system wants a directory
+            packageUrl = packageUrl.rsplit('/', 1)[0]
+            self.info("Overriding en_us_binary_url with %s" % packageUrl)
+            replace_dict['en_us_binary_url'] = packageUrl
         # Override en_us_binary_url if passed as a buildbot property
-        self.read_buildbot_config()
         if self.buildbot_config["properties"].get("en_us_binary_url"):
             self.info("Overriding en_us_binary_url with %s" %
                       self.buildbot_config["properties"]["en_us_binary_url"])
             replace_dict['en_us_binary_url'] = \
                 str(self.buildbot_config["properties"]["en_us_binary_url"])
         bootstrap_env = self.query_env(partial_env=config.get("bootstrap_env"),
                                        replace_dict=replace_dict)
         if 'MOZ_SIGNING_SERVERS' in os.environ: