diff --git a/src/Constants.js b/src/Constants.js
index 95934eff..f6224a2d 100644
--- a/src/Constants.js
+++ b/src/Constants.js
@@ -157,7 +157,7 @@ exports.GiveawaysManagerOptions = {
  * The reroll method options.
  * @typedef GiveawayRerollOptions
  *
- * @property {number} [winnerCount=this.winnerCount] The number of winners to pick.
+ * @property {number} [winnerCount=giveaway.winnerCount] The number of winners to pick.
  * @property {Object} [messages] The messages used in this method.
  * @property {string} [messages.congrat=':tada: New winner(s): {winners}! Congratulations, you won **{prize}**!\n{messageURL}'] The message used if there are new winners.
  * @property {string} [messages.error='No valid participations, no new winner(s) can be chosen!'] The message used if no new winner(s) could be chosen.
diff --git a/src/Giveaway.js b/src/Giveaway.js
index dbdd4b23..94bb917d 100644
--- a/src/Giveaway.js
+++ b/src/Giveaway.js
@@ -562,15 +562,17 @@ class Giveaway extends EventEmitter {
 
     /**
      * Rerolls the giveaway.
-     * @param {GiveawayRerollOptions} The reroll options.
+     * @param {GiveawayRerollOptions} [options] The reroll options.
      * @returns {Promise<Discord.GuildMember[]>}
      */
-    reroll(options) {
+    reroll(options = {}) {
         return new Promise(async (resolve, reject) => {
             if (!this.ended) return reject('Giveaway with message ID ' + this.messageID + ' is not ended.');
             if (!this.channel) return reject('Unable to get the channel of the giveaway with message ID ' + this.messageID + '.');
             await this.fetchMessage().catch(() => {});
             if (!this.message) return reject('Unable to fetch message with ID ' + this.messageID + '.');
+            if (!options || typeof options !== 'object') return reject(`Options is not an object (val=${options})`);
+            options = merge(GiveawayRerollOptions, options);
             if (options.winnerCount && (!Number.isInteger(options.winnerCount) || options.winnerCount < 1)) {
                 return reject(`options.winnerCount is not a positive integer. (val=${options.winnerCount})`);
             }
@@ -616,7 +618,7 @@ class Giveaway extends EventEmitter {
 
     /**
      * Pauses the giveaway.
-     * @param {PauseOptions} options The pause.
+     * @param {PauseOptions} options The pause options.
      * @returns {Promise<Giveaway>} The paused giveaway.
      */  
     pause(options = {}) {
diff --git a/src/Manager.js b/src/Manager.js
index a427f12c..72a3b1c3 100644
--- a/src/Manager.js
+++ b/src/Manager.js
@@ -267,7 +267,6 @@ class GiveawaysManager extends EventEmitter {
      */
     reroll(messageID, options = {}) {
         return new Promise(async (resolve, reject) => {
-            options = merge(GiveawayRerollOptions, options);
             const giveaway = this.giveaways.find((g) => g.messageID === messageID);
             if (!giveaway) return reject('No giveaway found with message ID ' + messageID + '.');