diff --git a/gtk2_ardour/plugin_manager_ui.cc b/gtk2_ardour/plugin_manager_ui.cc
index 194c1500c1..58b8c4b794 100644
--- a/gtk2_ardour/plugin_manager_ui.cc
+++ b/gtk2_ardour/plugin_manager_ui.cc
@@ -256,7 +256,7 @@ PluginManagerUI::PluginManagerUI ()
 	/* tooltips */
 	/* clang-format off */
 	ArdourWidgets::set_tooltip (_btn_reindex,    _("Only update plugin index, do not discover new plugins."));
-	ArdourWidgets::set_tooltip (_btn_rescan_all, _("Scans all plugins, regardless if they have already been successfully scanned\n.Depending on the number of plugins installed this can take a long time."));
+	ArdourWidgets::set_tooltip (_btn_rescan_all, _("Scans all plugins, regardless if they have already been successfully scanned.\nDepending on the number of plugins installed this can take a long time."));
 	ArdourWidgets::set_tooltip (_btn_rescan_err, _("Scans plugins that have not yet been successfully scanned."));
 	ArdourWidgets::set_tooltip (_btn_rescan_sel, _("Scans the selected plugin."));
 	ArdourWidgets::set_tooltip (_btn_clear,      _("Forget about plugins that have been removed from the system."));