diff --git a/Riot/Modules/Room/ParticipantsInviteModal/ContactsPicker/ContactsPickerViewModel.swift b/Riot/Modules/Room/ParticipantsInviteModal/ContactsPicker/ContactsPickerViewModel.swift
index cd06bd51e..aa1eb92ad 100644
--- a/Riot/Modules/Room/ParticipantsInviteModal/ContactsPicker/ContactsPickerViewModel.swift
+++ b/Riot/Modules/Room/ParticipantsInviteModal/ContactsPicker/ContactsPickerViewModel.swift
@@ -128,7 +128,9 @@ class ContactsPickerViewModel: NSObject, ContactsPickerViewModelProtocol {
         contactsViewController.showSearch(true)
         // Tchap: Replace string by removing user ID
         contactsViewController.searchBar.placeholder = VectorL10n.roomParticipantsInviteAnotherUserWithoutId
-        contactsViewController.searchBar.resignFirstResponder()
+        // Tchap: don't make searchbar resign as first responder.
+        // Let it becomes first responder to activate the input field and deploy the keyboard when the controller comes to screen.
+//        contactsViewController.searchBar.resignFirstResponder()
         
         // Apply the search pattern if any
         if currentSearchText != nil {
@@ -246,7 +248,15 @@ extension ContactsPickerViewModel: ContactsTableViewControllerDelegate {
                     self.coordinatorDelegate?.contactsPickerViewModelDidEndInvite(self)
                 case .failure:
                     MXLog.error("[ContactsPickerViewModel] Failed to invite participant", context: response.error)
-                    self.coordinatorDelegate?.contactsPickerViewModel(self, inviteFailedWithError: response.error)
+                    // Tchap: make error message clearer and in french when a member can't be invited to a room
+                    if let mxError = MXError(nsError: response.error),
+                       mxError.errcode == kMXErrCodeStringForbidden,
+                       let tchapErrorCannotInvite = MXError(errorCode: mxError.errcode, error: TchapL10n.roomInviteErrorActionForbidden, userInfo: mxError.userInfo) {
+                        self.coordinatorDelegate?.contactsPickerViewModel(self, inviteFailedWithError: tchapErrorCannotInvite.createNSError())
+                    }
+                    else {
+                        self.coordinatorDelegate?.contactsPickerViewModel(self, inviteFailedWithError: response.error)
+                    }
                 }
             }
         } else {
diff --git a/Tchap/Assets/Localizations/fr.lproj/Tchap.strings b/Tchap/Assets/Localizations/fr.lproj/Tchap.strings
index cf00b3668..9fee78b70 100644
--- a/Tchap/Assets/Localizations/fr.lproj/Tchap.strings
+++ b/Tchap/Assets/Localizations/fr.lproj/Tchap.strings
@@ -309,3 +309,7 @@
 ////////////////////////////////////////////////////////////////////////////////
 // MARK: Room Decryption error
 "room_decryption_error_faq_link_message" = "Sinon, consulter cet article de FAQ.";
+
+////////////////////////////////////////////////////////////////////////////////
+// MARK: Room Invite
+"room_invite_error_action_forbidden" = "Cet utilisateur n'est pas autorisé à rejoindre ce salon.";