diff --git a/libs/pbd/base_ui.cc b/libs/pbd/base_ui.cc
index 1ea3fdc993..2ea27a0652 100644
--- a/libs/pbd/base_ui.cc
+++ b/libs/pbd/base_ui.cc
@@ -136,10 +136,6 @@ BaseUI::request_handler (Glib::IOCondition ioc)
 {
 	/* check the request pipe */
 
-	if (ioc & ~IO_IN) {
-		_main_loop->quit ();
-	}
-
 	if (ioc & IO_IN) {
 		request_channel.drain ();
 
@@ -153,6 +149,10 @@ BaseUI::request_handler (Glib::IOCondition ioc)
 		handle_ui_requests ();
 	}
 
+	if (ioc & ~(IO_IN|IO_PRI)) {
+		_main_loop->quit ();
+	}
+
 	return true;
 }