diff --git a/changelog.d/7237.misc b/changelog.d/7237.misc
new file mode 100644
index 000000000000..92e67ea31fb9
--- /dev/null
+++ b/changelog.d/7237.misc
@@ -0,0 +1 @@
+Change log line that told user to implement onLogin/onRegister fallback js functions to a warning, instead of an info, so it's more visible.
\ No newline at end of file
diff --git a/synapse/static/client/login/js/login.js b/synapse/static/client/login/js/login.js
index 4c8920b6319c..611df36d3f50 100644
--- a/synapse/static/client/login/js/login.js
+++ b/synapse/static/client/login/js/login.js
@@ -128,8 +128,7 @@ matrixLogin.password_login = function() {
 
 matrixLogin.onLogin = function(response) {
     // clobber this function
-    console.log("onLogin - This function should be replaced to proceed.");
-    console.log(response);
+    console.warn("onLogin - This function should be replaced to proceed.");
 };
 
 var parseQsFromUrl = function(query) {
diff --git a/synapse/static/client/register/js/register.js b/synapse/static/client/register/js/register.js
index 959d120d7d47..3547f7be4fee 100644
--- a/synapse/static/client/register/js/register.js
+++ b/synapse/static/client/register/js/register.js
@@ -113,5 +113,5 @@ matrixRegistration.signUp = function() {
 
 matrixRegistration.onRegistered = function(hs_url, user_id, access_token) {
     // clobber this function
-    console.log("onRegistered - This function should be replaced to proceed.");
+    console.warn("onRegistered - This function should be replaced to proceed.");
 };