diff --git a/src/windows.c b/src/windows.c
index 87318766..93e6980e 100644
--- a/src/windows.c
+++ b/src/windows.c
@@ -185,7 +185,7 @@ ui_get_idle_time(void)
 
     return result;
 #else
-    gdouble seconds_elapsed = g_timer_elapsed(ui_idle_time);
+    gdouble seconds_elapsed = g_timer_elapsed(ui_idle_time, NULL);
     unsigned long ms_elapsed = seconds_elapsed * 1000.0;
     return ms_elapsed;
 #endif