diff --git a/adapters/admixer/usersync_test.go b/adapters/admixer/usersync_test.go
index d31f7b10fb1..79f023a236c 100644
--- a/adapters/admixer/usersync_test.go
+++ b/adapters/admixer/usersync_test.go
@@ -11,7 +11,7 @@ import (
 )
 
 func TestAdmixerSyncer(t *testing.T) {
-	syncURL := "https://inv-nets.admixer.net/adxcm.aspx?gdpr={{.GDPR}}&gdpr_consent={{.GDPRConsent}}&us_privacy={{.USPrivacy}}&redir=1&rurl=localhost%2Fsetuid%3Fbidder%3Dadmixer%26gdpr%3D{{.GDPR}}%26gdpr_consent%3D{{.GDPRConsent}}%26uid%3D%24%24visitor_cookie%24%24"
+	syncURL := "http://anyHost/anyPath"
 	syncURLTemplate := template.Must(
 		template.New("sync-template").Parse(syncURL),
 	)
@@ -28,7 +28,7 @@ func TestAdmixerSyncer(t *testing.T) {
 	})
 
 	assert.NoError(t, err)
-	assert.Equal(t, "https://inv-nets.admixer.net/adxcm.aspx?gdpr=A&gdpr_consent=B&us_privacy=C&redir=1&rurl=localhost%2Fsetuid%3Fbidder%3Dadmixer%26gdpr%3DA%26gdpr_consent%3DB%26uid%3D%24%24visitor_cookie%24%24", syncInfo.URL)
+	assert.Equal(t, "http://anyHost/anyPath", syncInfo.URL)
 	assert.Equal(t, "redirect", syncInfo.Type)
 	assert.EqualValues(t, 511, syncer.GDPRVendorID())
 	assert.Equal(t, false, syncInfo.SupportCORS)
diff --git a/config/config.go b/config/config.go
index d118668805e..e2eb22416c9 100755
--- a/config/config.go
+++ b/config/config.go
@@ -598,7 +598,7 @@ func (cfg *Configuration) setDerivedDefaults() {
 	setDefaultUsersync(cfg.Adapters, openrtb_ext.BidderGrid, "https://x.bidswitch.net/check_uuid/"+url.QueryEscape(externalURL)+"%2Fsetuid%3Fbidder%3Dgrid%26gdpr%3D{{.GDPR}}%26gdpr_consent%3D{{.GDPRConsent}}%26uid%3D%24%7BBSW_UUID%7D?gdpr={{.GDPR}}&gdpr_consent={{.GDPRConsent}}&us_privacy={{.USPrivacy}}")
 	setDefaultUsersync(cfg.Adapters, openrtb_ext.BidderGumGum, "https://rtb.gumgum.com/usync/prbds2s?gdpr={{.GDPR}}&gdpr_consent={{.GDPRConsent}}&us_privacy={{.USPrivacy}}&r="+url.QueryEscape(externalURL)+"%2Fsetuid%3Fbidder%3Dgumgum%26gdpr%3D{{.GDPR}}%26gdpr_consent%3D{{.GDPRConsent}}%26uid%3D")
 	setDefaultUsersync(cfg.Adapters, openrtb_ext.BidderImprovedigital, "https://ad.360yield.com/server_match?gdpr={{.GDPR}}&gdpr_consent={{.GDPRConsent}}&us_privacy={{.USPrivacy}}&r="+url.QueryEscape(externalURL)+"%2Fsetuid%3Fbidder%3Dimprovedigital%26gdpr%3D{{.GDPR}}%26gdpr_consent%3D{{.GDPRConsent}}%26uid%3D%7BPUB_USER_ID%7D")
-	setDefaultUsersync(cfg.Adapters, openrtb_ext.BidderIx, "https://ssum.casalemedia.com/usermatchredir?s=184932&cb="+url.QueryEscape(externalURL)+"%2Fsetuid%3Fbidder%3Dix%26gdpr%3D{{.GDPR}}%26gdpr_consent%3D{{.GDPRConsent}}%26uid%3D")
+	// openrtb_ext.BidderIx doesn't have a good default.
 	// openrtb_ext.BidderInvibes doesn't have a good default.
 	setDefaultUsersync(cfg.Adapters, openrtb_ext.BidderKrushmedia, "https://cs.krushmedia.com/4e4abdd5ecc661643458a730b1aa927d.gif?gdpr={{.GDPR}}&gdpr_consent={{.GDPRConsent}}&us_privacy={{.USPrivacy}}&redir="+url.QueryEscape(externalURL)+"%2Fsetuid%3Fbidder%3Dkrushmedia%26uid%3D%5BUID%5D")
 	setDefaultUsersync(cfg.Adapters, openrtb_ext.BidderLifestreet, "https://ads.lfstmedia.com/idsync/137062?synced=1&ttl=1s&rurl="+url.QueryEscape(externalURL)+"%2Fsetuid%3Fbidder%3Dlifestreet%26gdpr%3D{{.GDPR}}%26gdpr_consent%3D{{.GDPRConsent}}%26uid%3D%24%24visitor_cookie%24%24")