diff --git a/gtk2_ardour/ardour_ui.cc b/gtk2_ardour/ardour_ui.cc
index 287d42ea9b..da3eb1dd46 100644
--- a/gtk2_ardour/ardour_ui.cc
+++ b/gtk2_ardour/ardour_ui.cc
@@ -1360,7 +1360,7 @@ ARDOUR_UI::format_disk_space_label (float remain_sec)
 	int mins = (sec / 60) % 60;
 	int secs = sec % 60;
 	snprintf (buf, sizeof(buf), _("%02dh:%02dm:%02ds"), hrs, mins, secs);
-	ArdourWidgets::set_tooltip (disk_space_label, buf);
+	ArdourWidgets::set_tooltip (disk_space_label, string_compose ("%1: %2", _("Available record time"), buf));
 
 	std::string label = string_compose (X_("<span weight=\"ultralight\">%1</span>: "), _("Rec"));
 
diff --git a/gtk2_ardour/ardour_ui_ed.cc b/gtk2_ardour/ardour_ui_ed.cc
index e3cca271ae..d1012d6a5e 100644
--- a/gtk2_ardour/ardour_ui_ed.cc
+++ b/gtk2_ardour/ardour_ui_ed.cc
@@ -796,7 +796,7 @@ ARDOUR_UI::build_menu_bar ()
 	ev_timecode->signal_button_press_event().connect (sigc::mem_fun (*this, &ARDOUR_UI::timecode_button_press));
 
 	ArdourWidgets::set_tooltip (session_path_label, _("Double click to open session folder."));
-	ArdourWidgets::set_tooltip (format_label, _("Double click to edit audoi file format."));
+	ArdourWidgets::set_tooltip (format_label, _("Double click to edit audio file format."));
 	ArdourWidgets::set_tooltip (timecode_format_label, _("Double click to change timecode settings."));
 	ArdourWidgets::set_tooltip (sample_rate_label, _("Double click to show audio/midi setup."));
 }