diff --git a/src/backends/x11/meta-input-device-x11.c b/src/backends/x11/meta-input-device-x11.c
index 5f0c582b1..eb1a838fb 100644
--- a/src/backends/x11/meta-input-device-x11.c
+++ b/src/backends/x11/meta-input-device-x11.c
@@ -379,84 +379,6 @@ meta_input_device_x11_init (MetaInputDeviceX11 *self)
 {
 }
 
-static ClutterModifierType
-get_modifier_for_button (int i)
-{
-  switch (i)
-    {
-    case 1:
-      return CLUTTER_BUTTON1_MASK;
-    case 2:
-      return CLUTTER_BUTTON2_MASK;
-    case 3:
-      return CLUTTER_BUTTON3_MASK;
-    case 4:
-      return CLUTTER_BUTTON4_MASK;
-    case 5:
-      return CLUTTER_BUTTON5_MASK;
-    default:
-      return 0;
-    }
-}
-
-void
-meta_input_device_x11_translate_state (ClutterEvent    *event,
-                                       XIModifierState *modifiers_state,
-                                       XIButtonState   *buttons_state,
-                                       XIGroupState    *group_state)
-{
-  uint32_t button = 0;
-  uint32_t base = 0;
-  uint32_t latched = 0;
-  uint32_t locked = 0;
-  uint32_t effective;
-
-  if (modifiers_state)
-    {
-      base = (uint32_t) modifiers_state->base;
-      latched = (uint32_t) modifiers_state->latched;
-      locked = (uint32_t) modifiers_state->locked;
-    }
-
-  if (buttons_state)
-    {
-      int len, i;
-
-      len = MIN (N_BUTTONS, buttons_state->mask_len * 8);
-
-      for (i = 0; i < len; i++)
-        {
-          if (!XIMaskIsSet (buttons_state->mask, i))
-            continue;
-
-          button |= get_modifier_for_button (i);
-        }
-    }
-
-  /* The XIButtonState sent in the event specifies the
-   * state of the buttons before the event. In order to
-   * get the current state of the buttons, we need to
-   * filter out the current button.
-   */
-  switch (event->type)
-    {
-    case CLUTTER_BUTTON_PRESS:
-      button |=  (get_modifier_for_button (event->button.button));
-      break;
-    case CLUTTER_BUTTON_RELEASE:
-      button &= ~(get_modifier_for_button (event->button.button));
-      break;
-    default:
-      break;
-    }
-
-  effective = button | base | latched | locked;
-  if (group_state)
-    effective |= (group_state->effective) << 13;
-
-  _clutter_event_set_state_full (event, button, base, latched, locked, effective);
-}
-
 void
 meta_input_device_x11_update_tool (ClutterInputDevice     *device,
                                    ClutterInputDeviceTool *tool)
diff --git a/src/backends/x11/meta-input-device-x11.h b/src/backends/x11/meta-input-device-x11.h
index 1ea85aa14..1d563213f 100644
--- a/src/backends/x11/meta-input-device-x11.h
+++ b/src/backends/x11/meta-input-device-x11.h
@@ -42,10 +42,6 @@ typedef struct _MetaInputDeviceX11Class MetaInputDeviceX11Class;
 
 GType meta_input_device_x11_get_type (void) G_GNUC_CONST;
 
-void  meta_input_device_x11_translate_state (ClutterEvent    *event,
-                                             XIModifierState *modifiers_state,
-                                             XIButtonState   *buttons_state,
-                                             XIGroupState    *group_state);
 void  meta_input_device_x11_update_tool     (ClutterInputDevice     *device,
                                              ClutterInputDeviceTool *tool);
 ClutterInputDeviceTool * meta_input_device_x11_get_current_tool (ClutterInputDevice *device);