diff --git a/src/controllers/ConversationsController.ts b/src/controllers/ConversationsController.ts
index 2dd1ac6..dcc6d7a 100644
--- a/src/controllers/ConversationsController.ts
+++ b/src/controllers/ConversationsController.ts
@@ -21,7 +21,7 @@ export class ConversationsController {
 
 		const name = h.postString("name");
 
-		const members = [...new Set(h.postNumbersList("users"))];
+		const members = h.postNumbersSet("users");
 		
 		// Check if the users exists
 		for (const userID of members) {
@@ -29,8 +29,8 @@ export class ConversationsController {
 				h.error(404, "User " + userID + " not found!");
 		}
 
-		if(!members.includes(h.getUserId()))
-			members.push(h.getUserId());
+		if(!members.has(h.getUserId()))
+			members.add(h.getUserId());
 
 		const conv : BaseConversation = {
 			ownerID: h.getUserId(),
@@ -149,7 +149,7 @@ export class ConversationsController {
 			name: c.name.length > 0 ? c.name : false,
 			following: c.following ? 1 : 0,
 			saw_last_message: c.sawLastMessage ? 1 : 0,
-			members: c.members
+			members: [...c.members]
 		};
 	}
 }
\ No newline at end of file
diff --git a/src/entities/Conversation.ts b/src/entities/Conversation.ts
index da871f3..9ecec92 100644
--- a/src/entities/Conversation.ts
+++ b/src/entities/Conversation.ts
@@ -8,7 +8,7 @@ export interface BaseConversation {
 	ownerID: number,
 	name: string,
 	following: boolean,
-	members: Array<number>
+	members: Set<number>
 }
 
 export interface Conversation extends BaseConversation {
diff --git a/src/helpers/ConversationsHelper.ts b/src/helpers/ConversationsHelper.ts
index 043d092..1f1dcd1 100644
--- a/src/helpers/ConversationsHelper.ts
+++ b/src/helpers/ConversationsHelper.ts
@@ -271,7 +271,7 @@ export class ConversationsHelper {
 			timeCreate: row.time_add,
 			following: row.following,
 			sawLastMessage: row.saw_last_message == 1,
-			members: [...await this.GetConversationMembers(row.id)]
+			members: await this.GetConversationMembers(row.id)
 		}
 	}
 }
\ No newline at end of file