diff --git a/src/scripts/classes/mapping/platform-user.ts b/src/scripts/classes/mapping/platform-user.ts
index 0817805..9f9e621 100644
--- a/src/scripts/classes/mapping/platform-user.ts
+++ b/src/scripts/classes/mapping/platform-user.ts
@@ -151,7 +151,7 @@ export default class PlatformUser implements ILazy {
     if (!shared.isLogged) throw new UserNotLogged(USER_NOT_LOGGED);
 
     // Check ID
-    if (!this.id && this.id < 1) throw new InvalidID(INVALID_USER_ID);
+    if (!this.id || this.id < 1) throw new InvalidID(INVALID_USER_ID);
 
     // Prepare the URL
     const url = new URL(this.id.toString(), `${urls.MEMBERS}/`).toString();
diff --git a/src/scripts/classes/mapping/post.ts b/src/scripts/classes/mapping/post.ts
index 1d3f59c..8c42dd7 100644
--- a/src/scripts/classes/mapping/post.ts
+++ b/src/scripts/classes/mapping/post.ts
@@ -102,7 +102,7 @@ export default class Post implements ILazy {
     if (!shared.isLogged) throw new UserNotLogged(USER_NOT_LOGGED);
 
     // Check ID
-    if (!this.id && this.id < 1) throw new InvalidID(INVALID_POST_ID);
+    if (!this.id || this.id < 1) throw new InvalidID(INVALID_POST_ID);
 
     // Fetch HTML page containing the post
     const url = new URL(this.id.toString(), urls.POSTS).toString();
diff --git a/src/scripts/classes/mapping/thread.ts b/src/scripts/classes/mapping/thread.ts
index 5ea3d43..201812c 100644
--- a/src/scripts/classes/mapping/thread.ts
+++ b/src/scripts/classes/mapping/thread.ts
@@ -237,7 +237,7 @@ export default class Thread implements ILazy {
     if (!shared.isLogged) throw new UserNotLogged(USER_NOT_LOGGED);
 
     // Check ID
-    if (!this.id && this.id < 1) throw new InvalidID(INVALID_THREAD_ID);
+    if (!this.id || this.id < 1) throw new InvalidID(INVALID_THREAD_ID);
 
     // Prepare the url
     this._url = new URL(this.id.toString(), urls.THREADS).toString();