diff --git a/clutter/clutter/clutter-frame-clock.c b/clutter/clutter/clutter-frame-clock.c
index 3f3b9d9d83fb4d5a98f60e5d1bcac9abde54865a..42c1e66d038fb2516ff18887ac63cf30de673cb5 100644
--- a/clutter/clutter/clutter-frame-clock.c
+++ b/clutter/clutter/clutter-frame-clock.c
@@ -63,6 +63,7 @@ struct _ClutterFrameClock
   GObject parent;
 
   float refresh_rate;
+  int64_t refresh_interval_us;
   ClutterFrameListener listener;
 
   GSource *source;
@@ -92,6 +93,15 @@ clutter_frame_clock_get_refresh_rate (ClutterFrameClock *frame_clock)
   return frame_clock->refresh_rate;
 }
 
+static void
+clutter_frame_clock_set_refresh_rate (ClutterFrameClock *frame_clock,
+                                      float              refresh_rate)
+{
+  frame_clock->refresh_rate = refresh_rate;
+  frame_clock->refresh_interval_us =
+    (int64_t) (0.5 + G_USEC_PER_SEC / refresh_rate);
+}
+
 void
 clutter_frame_clock_add_timeline (ClutterFrameClock *frame_clock,
                                   ClutterTimeline   *timeline)
@@ -197,7 +207,7 @@ clutter_frame_clock_notify_presented (ClutterFrameClock *frame_clock,
       frame_clock->last_presentation_time_us = g_get_monotonic_time ();
     }
 
-  frame_clock->refresh_rate = frame_info->refresh_rate;
+  clutter_frame_clock_set_refresh_rate (frame_clock, frame_info->refresh_rate);
 
   switch (frame_clock->state)
     {
@@ -221,7 +231,6 @@ calculate_next_update_time_us (ClutterFrameClock *frame_clock,
 {
   int64_t last_presentation_time_us;
   int64_t now_us;
-  float refresh_rate;
   int64_t refresh_interval_us;
   int64_t min_render_time_allowed_us;
   int64_t max_render_time_allowed_us;
@@ -232,8 +241,7 @@ calculate_next_update_time_us (ClutterFrameClock *frame_clock,
 
   now_us = g_get_monotonic_time ();
 
-  refresh_rate = frame_clock->refresh_rate;
-  refresh_interval_us = (int64_t) (0.5 + G_USEC_PER_SEC / refresh_rate);
+  refresh_interval_us = frame_clock->refresh_interval_us;
 
   min_render_time_allowed_us = refresh_interval_us / 2;
   max_render_time_allowed_us = refresh_interval_us - SYNC_DELAY_US;
@@ -501,7 +509,7 @@ clutter_frame_clock_new (float                            refresh_rate,
 
   init_frame_clock_source (frame_clock);
 
-  frame_clock->refresh_rate = refresh_rate;
+  clutter_frame_clock_set_refresh_rate (frame_clock, refresh_rate);
 
   return frame_clock;
 }