diff --git a/src/app/cli/Cli.cpp b/src/app/cli/Cli.cpp
index a42071e0a..c9f98188b 100644
--- a/src/app/cli/Cli.cpp
+++ b/src/app/cli/Cli.cpp
@@ -186,7 +186,7 @@ Cli::Cli (QObject *parent) : QObject(parent) {
     { "sip-address", {} }, { "conference-id", {} }
   });
   addCommand("join-conference", tr("joinConferenceFunctionDescription"), ::cliJoinConference, {
-    { "sip-address", {} }, { "conference-id", {} }, { "display-name", {} }
+    { "sip-address", {} }, { "conference-id", {} }, { "display-name", {STRING, true } }
   });
 }