diff --git a/gtk2_ardour/ui/editor_window.xml b/gtk2_ardour/ui/editor_window.xml
index 42df0040f3..2e634092b4 100644
--- a/gtk2_ardour/ui/editor_window.xml
+++ b/gtk2_ardour/ui/editor_window.xml
@@ -359,27 +359,31 @@
                         pageincrement="1"/>
             <HBox borderwidth="1"
                   spacing="1">
-              <Fader id="vertical_zoom_fader"
-                   adjustment="vertical_zoom_adjustment"
-                   facesource="vertical_zoom_fader_face.png"
-                   handlesource="zoom_fader_handle.png"
-                   activehandlesource="zoom_fader_handle_active.png"
-                   x="1"
-                   y="1"
-                   minposx="20"
-                   minposy="13"
-                   maxposx="66"
-                   maxposy="13"/>
-              <Fader adjustment="temporal_zoom_adjustment"
-                     facesource="horizontal_zoom_fader_face.png"
-                     handlesource="zoom_fader_handle.png"
-                     activehandlesource="zoom_fader_handle_active.png"
-                     x="76"
-                     y="1"
-                     minposx="66"
-                     minposy="13"
-                     maxposx="20"
-                     maxposy="13"/>
+              <EventBox tooltip="Vertical Zoom">
+                  <Fader id="vertical_zoom_fader"
+                       adjustment="vertical_zoom_adjustment"
+                       facesource="vertical_zoom_fader_face.png"
+                       handlesource="zoom_fader_handle.png"
+                       activehandlesource="zoom_fader_handle_active.png"
+                       x="1"
+                       y="1"
+                       minposx="20"
+                       minposy="13"
+                       maxposx="66"
+                       maxposy="13"/>
+              </EventBox>
+              <EventBox tooltip="Horizontal Zoom">
+                  <Fader adjustment="temporal_zoom_adjustment"
+                         facesource="horizontal_zoom_fader_face.png"
+                         handlesource="zoom_fader_handle.png"
+                         activehandlesource="zoom_fader_handle_active.png"
+                         x="76"
+                         y="1"
+                         minposx="66"
+                         minposy="13"
+                         maxposx="20"
+                         maxposy="13"/>
+              </EventBox>
               <EventBox id="waves_zoom_control_home"
                         tooltip="Waveform Zoom"
                         x="151"