diff --git a/packages/discord.js/src/managers/GuildMemberManager.js b/packages/discord.js/src/managers/GuildMemberManager.js
index 9b4defa6f..fec36ed53 100644
--- a/packages/discord.js/src/managers/GuildMemberManager.js
+++ b/packages/discord.js/src/managers/GuildMemberManager.js
@@ -266,7 +266,10 @@ class GuildMemberManager extends CachedManager {
     _data.roles &&= _data.roles.map(role => (role instanceof Role ? role.id : role));
 
     _data.communication_disabled_until =
-      _data.communicationDisabledUntil && new Date(_data.communicationDisabledUntil).toISOString();
+      // eslint-disable-next-line eqeqeq
+      _data.communicationDisabledUntil != null
+        ? new Date(_data.communicationDisabledUntil).toISOString()
+        : _data.communicationDisabledUntil;
 
     let endpoint = this.client.api.guilds(this.guild.id);
     if (id === this.client.user.id) {
diff --git a/packages/discord.js/src/structures/MessageEmbed.js b/packages/discord.js/src/structures/MessageEmbed.js
index ee2a9b55c..06a808449 100644
--- a/packages/discord.js/src/structures/MessageEmbed.js
+++ b/packages/discord.js/src/structures/MessageEmbed.js
@@ -88,8 +88,8 @@ class MessageEmbed {
      * @type {?number}
      */
     // Date.parse() cannot be used here because data.timestamp might be a number
-    // Additionally, the nullish coalescing operator cannot be used here as we're checking for 0
-    this.timestamp = new Date(data.timestamp).getTime() || null;
+    // eslint-disable-next-line eqeqeq
+    this.timestamp = data.timestamp != null ? new Date(data.timestamp).getTime() : null;
 
     /**
      * Represents a field of a MessageEmbed
@@ -242,7 +242,7 @@ class MessageEmbed {
    * @readonly
    */
   get createdAt() {
-    return this.timestamp && new Date(this.timestamp);
+    return typeof this.timestamp === 'number' ? new Date(this.timestamp) : null;
   }
 
   /**