diff --git a/lib/Client/InternalClient.js b/lib/Client/InternalClient.js
index ed1173520..4352c6045 100644
--- a/lib/Client/InternalClient.js
+++ b/lib/Client/InternalClient.js
@@ -1219,6 +1219,8 @@ var InternalClient = (function () {
 	//def updateDetails
 
 	InternalClient.prototype.updateDetails = function updateDetails(data) {
+		if (!this.bot && !(this.email || data.email)) throw new Error("Must provide email since a token was used to login");
+
 		var options = {
 			avatar: this.resolver.resolveToBase64(data.avatar) || this.user.avatar,
 			username: data.username || this.user.username
diff --git a/src/Client/InternalClient.js b/src/Client/InternalClient.js
index ee46f422a..22793b698 100644
--- a/src/Client/InternalClient.js
+++ b/src/Client/InternalClient.js
@@ -1005,6 +1005,9 @@ export default class InternalClient {
 
 	//def updateDetails
 	updateDetails(data) {
+		if (!this.bot && !(this.email || data.email)) 
+			throw new Error("Must provide email since a token was used to login");
+
 		var options = {
 			avatar: this.resolver.resolveToBase64(data.avatar) || this.user.avatar,
 			username: data.username || this.user.username