--- a/mozilla/b2g_config.py
+++ b/mozilla/b2g_config.py
@@ -1103,17 +1103,17 @@ PLATFORM_VARS = {
             "-f", "../reboot_count.txt", "-n", "1", "-z"
         ],
         "mozharness_repo_cache": "/tools/checkouts/mozharness",
         "tools_repo_cache": "/tools/checkouts/build-tools",
         "mozharness_desktop_build": {
             "script_name": "scripts/fx_desktop_build.py",
             "extra_args": [
                 "--config", "builds/releng_base_linux_64_builds.py",
-                "--custom-build-variant-cfg", "graphene"
+                "--custom-build-variant-cfg", "graphene",
                 '--config', GLOBAL_VARS['mozharness_configs']['balrog'],
             ],
             "script_timeout": 3 * 3600,
             "script_maxtime": int(5.5 * 3600),
         },
         "stage_product": "b2g",
         "base_name": "graphene_%(branch)s_linux64",
         "platform_objdir": OBJDIR,
@@ -1123,17 +1123,17 @@ PLATFORM_VARS = {
     "macosx64_graphene": {
         "mozharness_python": "/tools/buildbot/bin/python",
         "reboot_command": ["scripts/external_tools/count_and_reboot.py",
                            "-f", "../reboot_count.txt", "-n", "1", "-z"],
         "mozharness_desktop_build": {
             "script_name": "scripts/fx_desktop_build.py",
             "extra_args": [
                 "--config", "builds/releng_base_mac_64_builds.py",
-                "--custom-build-variant-cfg", "graphene"
+                "--custom-build-variant-cfg", "graphene",
                 '--config', GLOBAL_VARS['mozharness_configs']['balrog'],
             ],
             "script_timeout": 3 * 3600,
             "script_maxtime": int(5.5 * 3600),
         },
         "stage_product": "b2g",
         "base_name": "graphene_%(branch)s_macosx64",
         "platform_objdir": OBJDIR,
@@ -1146,17 +1146,17 @@ PLATFORM_VARS = {
             "c:/mozilla-build/python27/python", "-u",
             "scripts/external_tools/count_and_reboot.py",
             "-f", "../reboot_count.txt","-n", "1", "-z"
         ],
         "mozharness_desktop_build": {
             "script_name": "scripts/fx_desktop_build.py",
             "extra_args": [
                 "--config", "builds/releng_base_windows_64_builds.py",
-                "--custom-build-variant-cfg", "graphene"
+                "--custom-build-variant-cfg", "graphene",
                 '--config', GLOBAL_VARS['mozharness_configs']['balrog'],
             ],
             "script_timeout": 3 * 3600,
             "script_maxtime": int(5.5 * 3600),
         },
         "stage_product": "b2g",
         "base_name": "graphene_%(branch)s_win64",
         "platform_objdir": OBJDIR,