diff --git a/tests/events/stopwatch.cpp b/tests/events/stopwatch.cpp
index a7708a85b6..1794cbfec1 100644
--- a/tests/events/stopwatch.cpp
+++ b/tests/events/stopwatch.cpp
@@ -95,7 +95,7 @@ void StopWatchTestCase::Misc()
     WX_ASSERT_MESSAGE
     (
         ("Actual time value is %ld", t),
-        t > sleepTime - tolerance && t < sleepTime + tolerance
+        t > sleepTime - tolerance && t < 2*sleepTime
     );
 
     sw.Pause();