diff --git a/CHANGELOG.md b/CHANGELOG.md
index 34b157a7..da96615f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,7 +23,6 @@
   - Method `Realm.privilges()` to compute privileges on a Realm, a Realm object schema, or a Realm object. The method returns either a `Realm.Permissions.Realm` or `Realm.Permissions.Class` object.
   - For non-synced Realms, all privileges are always granted.
   - For more details, please read the reference documentation.
-* [Sync] Decrepated `Realm.Sync.setFeatureToken` (#1689).
 
 ### Internal
 * Updated to Realm Core 5.3.0.
diff --git a/lib/extensions.js b/lib/extensions.js
index 2f3792f4..033d305c 100644
--- a/lib/extensions.js
+++ b/lib/extensions.js
@@ -151,7 +151,11 @@ module.exports = function(realmConstructor) {
 
         if (realmConstructor.Sync._setFeatureToken) {
             realmConstructor.Sync.setFeatureToken = function(featureToken) {
-                console.log('Realm.Sync.setFeatureToken() is deprecated and you can remove any calls to it.');
+                if (typeof featureToken !== 'string' && !(featureToken instanceof String)) {
+                    throw new Error("featureToken should be a string");
+                }
+
+                realmConstructor.Sync._setFeatureToken(featureToken.trim());
             }
         }
 
diff --git a/lib/index.d.ts b/lib/index.d.ts
index f7fa3cdd..21f0e93a 100644
--- a/lib/index.d.ts
+++ b/lib/index.d.ts
@@ -448,10 +448,6 @@ declare namespace Realm.Sync {
     function removeListener(regex: string, name: string, changeCallback: (changeEvent: ChangeEvent) => void): Promise<void>;
     function setLogLevel(logLevel: 'all' | 'trace' | 'debug' | 'detail' | 'info' | 'warn' | 'error' | 'fatal' | 'off'): void;
     function initiateClientReset(path: string): void;
-
-    /**
-     * @deprecated, to be removed in future versions
-     */
     function setFeatureToken(token: string): void;
 
     type Instruction = {