diff --git a/src/insets/InsetBox.cpp b/src/insets/InsetBox.cpp
index fe4f44b2cc..769a2aeff1 100644
--- a/src/insets/InsetBox.cpp
+++ b/src/insets/InsetBox.cpp
@@ -201,13 +201,10 @@ void InsetBox::doDispatch(Cursor & cur, FuncRequest & cmd)
 			params_.type = cmd.getArg(1);
 		else
 			string2params(to_utf8(cmd.argument()), params_);
+		setButtonLabel();
 		break;
 	}
 
-	case LFUN_INSET_DIALOG_UPDATE:
-		cur.bv().updateDialog("box", params2string(params_));
-		break;
-
 	default:
 		InsetCollapsable::doDispatch(cur, cmd);
 		break;