diff --git a/config/bidderinfo.go b/config/bidderinfo.go
index ce3eb57e..a8a7dbd0 100644
--- a/config/bidderinfo.go
+++ b/config/bidderinfo.go
@@ -803,8 +803,8 @@ func (s *Syncer) Override(original *Syncer) *Syncer {
 		copy.ExternalURL = s.ExternalURL
 	}
 
-	if s.SupportCORS != nil {
-		copy.SupportCORS = s.SupportCORS
+	if s.Enabled != nil {
+		copy.Enabled = s.Enabled
 	}
 
 	return &copy
diff --git a/config/bidderinfo_test.go b/config/bidderinfo_test.go
index 785b85bc..1a9c2b42 100644
--- a/config/bidderinfo_test.go
+++ b/config/bidderinfo_test.go
@@ -1479,6 +1479,30 @@ func TestSyncerOverride(t *testing.T) {
 			givenOverride: &Syncer{ExternalURL: "overrideExternalURL"},
 			expected:      &Syncer{Key: "originalKey", ExternalURL: "overrideExternalURL"},
 		},
+		{
+			description:   "Override Enabled - True To False",
+			givenOriginal: &Syncer{Key: "originalKey", Enabled: ptrutil.ToPtr(true)},
+			givenOverride: &Syncer{Enabled: ptrutil.ToPtr(false)},
+			expected:      &Syncer{Key: "originalKey", Enabled: ptrutil.ToPtr(false)},
+		},
+		{
+			description:   "Override Enabled - False To True",
+			givenOriginal: &Syncer{Key: "originalKey", Enabled: ptrutil.ToPtr(false)},
+			givenOverride: &Syncer{Enabled: ptrutil.ToPtr(true)},
+			expected:      &Syncer{Key: "originalKey", Enabled: ptrutil.ToPtr(true)},
+		},
+		{
+			description:   "Override Enabled - Nil Preserves Original",
+			givenOriginal: &Syncer{Key: "originalKey", Enabled: ptrutil.ToPtr(true)},
+			givenOverride: &Syncer{},
+			expected:      &Syncer{Key: "originalKey", Enabled: ptrutil.ToPtr(true)},
+		},
+		{
+			description:   "Override Enabled - Set On Nil Original",
+			givenOriginal: nil,
+			givenOverride: &Syncer{Enabled: ptrutil.ToPtr(false)},
+			expected:      &Syncer{Enabled: ptrutil.ToPtr(false)},
+		},
 	}
 
 	for _, test := range testCases {
diff --git a/config/config.go b/config/config.go
index 02153c24..07ef7c3d 100644
--- a/config/config.go
+++ b/config/config.go
@@ -1441,6 +1441,7 @@ func setBidderDefaults(v *viper.Viper, bidder string) {
 	v.BindEnv(adapterCfgPrefix + ".openrtb.version")
 	v.BindEnv(adapterCfgPrefix + ".openrtb.gpp-supported")
 
+	v.BindEnv(adapterCfgPrefix + ".usersync.enabled")
 	v.BindEnv(adapterCfgPrefix + ".usersync.key")
 	v.BindEnv(adapterCfgPrefix + ".usersync.default")
 	v.BindEnv(adapterCfgPrefix + ".usersync.iframe.url")
diff --git a/config/config_test.go b/config/config_test.go
index 7d7ebe91..a82db109 100644
--- a/config/config_test.go
+++ b/config/config_test.go
@@ -1048,11 +1048,18 @@ func TestUserSyncFromEnv(t *testing.T) {
 		defer os.Unsetenv("PBS_ADAPTERS_BIDDER2_USERSYNC_IFRAME_URL")
 	}
 
+	if oldval, ok := os.LookupEnv("PBS_ADAPTERS_BIDDER2_USERSYNC_ENABLED"); ok {
+		defer os.Setenv("PBS_ADAPTERS_BIDDER2_USERSYNC_ENABLED", oldval)
+	} else {
+		defer os.Unsetenv("PBS_ADAPTERS_BIDDER2_USERSYNC_ENABLED")
+	}
+
 	// set new
 	os.Setenv("PBS_ADAPTERS_BIDDER1_USERSYNC_REDIRECT_URL", "http://some.url/sync?redirect={{.RedirectURL}}")
 	os.Setenv("PBS_ADAPTERS_BIDDER1_USERSYNC_REDIRECT_USER_MACRO", "[UID]")
 	os.Setenv("PBS_ADAPTERS_BIDDER1_USERSYNC_SUPPORT_CORS", "true")
 	os.Setenv("PBS_ADAPTERS_BIDDER2_USERSYNC_IFRAME_URL", "http://somedifferent.url/sync?redirect={{.RedirectURL}}")
+	os.Setenv("PBS_ADAPTERS_BIDDER2_USERSYNC_ENABLED", "false")
 
 	cfg, _ := newDefaultConfig(t)
 
@@ -1063,7 +1070,7 @@ func TestUserSyncFromEnv(t *testing.T) {
 
 	assert.Equal(t, "http://somedifferent.url/sync?redirect={{.RedirectURL}}", cfg.BidderInfos["bidder2"].Syncer.IFrame.URL)
 	assert.Nil(t, cfg.BidderInfos["bidder2"].Syncer.Redirect)
-	assert.Nil(t, cfg.BidderInfos["bidder2"].Syncer.SupportCORS)
+	assert.Equal(t, ptrutil.ToPtr(false), cfg.BidderInfos["bidder2"].Syncer.Enabled)
 }
 
 func TestBidderInfoFromEnv(t *testing.T) {