--- a/testing/mozharness/configs/builds/releng_base_mac_64_builds.py
+++ b/testing/mozharness/configs/builds/releng_base_mac_64_builds.py
@@ -26,18 +26,18 @@ config = {
     # decides whether we want to use moz_sign_cmd in env
     'enable_signing': True,
     'enable_ccache': True,
     'vcs_share_base': '/builds/hg-shared',
     'objdir': 'obj-firefox',
     'tooltool_script': ["/builds/tooltool.py"],
     'tooltool_bootstrap': "setup.sh",
     'enable_count_ctors': False,
-    'enable_talos_sendchange': False,
-    'enable_unittest_sendchange': False,
+    'enable_talos_sendchange': True,
+    'enable_unittest_sendchange': True,
     #########################################################################
 
 
     #########################################################################
     ###### 64 bit specific ######
     'base_name': 'OS X 10.7 %(branch)s',
     'platform': 'macosx64',
     'stage_platform': 'macosx64',

--- a/testing/mozharness/configs/builds/releng_sub_mac_configs/64_debug.py
+++ b/testing/mozharness/configs/builds/releng_sub_mac_configs/64_debug.py
@@ -14,16 +14,17 @@ config = {
         'check-test',
         'generate-build-stats',
         'update',  # decided by query_is_nightly()
     ],
     'stage_platform': 'macosx64-debug',
     'debug_build': True,
     'objdir': 'obj-firefox',
     'enable_talos_sendchange': False,
+    'enable_unittest_sendchange': False,
     #### 64 bit build specific #####
     'env': {
         'MOZBUILD_STATE_PATH': os.path.join(os.getcwd(), '.mozbuild'),
         'MOZ_AUTOMATION': '1',
         'HG_SHARE_BASE_DIR': '/builds/hg-shared',
         'MOZ_OBJDIR': 'obj-firefox',
         'TINDERBOX_OUTPUT': '1',
         'TOOLTOOL_CACHE': '/builds/tooltool_cache',