diff --git a/apps/ios/SimpleXChat/APITypes.swift b/apps/ios/SimpleXChat/APITypes.swift
index 2da068653d..7a33253c04 100644
--- a/apps/ios/SimpleXChat/APITypes.swift
+++ b/apps/ios/SimpleXChat/APITypes.swift
@@ -171,7 +171,7 @@ public enum ChatCommand {
             case let .apiMuteUser(userId): return "/_mute user \(userId)"
             case let .apiUnmuteUser(userId): return "/_unmute user \(userId)"
             case let .apiDeleteUser(userId, delSMPQueues, viewPwd): return "/_delete user \(userId) del_smp=\(onOff(delSMPQueues))\(maybePwd(viewPwd))"
-            case let .startChat(mainApp, enableSndFiles): return "/_start main=\(onOff(mainApp)) snd_files=\(enableSndFiles)"
+            case let .startChat(mainApp, enableSndFiles): return "/_start main=\(onOff(mainApp)) snd_files=\(onOff(enableSndFiles))"
             case .apiStopChat: return "/_stop"
             case let .apiActivateChat(restore): return "/_app activate restore=\(onOff(restore))"
             case let .apiSuspendChat(timeoutMicroseconds): return "/_app suspend \(timeoutMicroseconds)"