diff --git a/lib/helpers/conversations_helper.dart b/lib/helpers/conversations_helper.dart
index 8662c48..22f5154 100644
--- a/lib/helpers/conversations_helper.dart
+++ b/lib/helpers/conversations_helper.dart
@@ -49,6 +49,15 @@ class ConversationsHelper {
     return response.getObject()["conversationID"];
   }
 
+  /// Add a member to a conversation.
+  ///
+  /// Throws in case of failure
+  static Future<void> addMember(int convID, int userID) async =>
+      await APIRequest.withLogin("conversations/addMember")
+          .addInt("convID", convID)
+          .addInt("userID", userID)
+          .execWithThrow();
+
   /// Remove a member from a conversation.
   ///
   /// Throws in case of failure
diff --git a/lib/ui/screens/update_conversation_screen.dart b/lib/ui/screens/update_conversation_screen.dart
index 1f9a21d..0086733 100644
--- a/lib/ui/screens/update_conversation_screen.dart
+++ b/lib/ui/screens/update_conversation_screen.dart
@@ -166,14 +166,11 @@ class _UpdateConversationScreen extends State<UpdateConversationScreen> {
 
             // Add a member to the conversation
             PickUserWidget(
-              resetOnChoose: true,
-              keepFocusOnChoose: true,
-              label: tr("Add member"),
-              enabled: _canAddMembers,
-              onSelectUser: (user) => setState(() {
-                if (!_members.contains(user)) _members.insert(0, user);
-              }),
-            ),
+                resetOnChoose: true,
+                keepFocusOnChoose: true,
+                label: tr("Add member"),
+                enabled: _canAddMembers,
+                onSelectUser: (user) => _addMember(user)),
 
             //Conversation members
             Column(
@@ -229,6 +226,20 @@ class _UpdateConversationScreen extends State<UpdateConversationScreen> {
     }
   }
 
+  void _addMember(User user) async {
+    try {
+      if (_members.contains(user)) return;
+
+      if (isUpdating)
+        await ConversationsHelper.addMember(_conversation.id, user.id);
+
+      setState(() => _members.insert(0, user));
+    } catch (e, s) {
+      logError(e, s);
+      snack(context, tr("Failed to add member to conversation!"));
+    }
+  }
+
   void _removeMember(User user) async {
     try {
       if (isUpdating)