diff --git a/testing/drivers/drivertest/drivertest_posix_timer.c b/testing/drivers/drivertest/drivertest_posix_timer.c
index 00b7fb203..d2855dfb4 100644
--- a/testing/drivers/drivertest/drivertest_posix_timer.c
+++ b/testing/drivers/drivertest/drivertest_posix_timer.c
@@ -41,7 +41,7 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
-#define RTC_DEFAULT_DEVIATION 10
+#define RTC_DEFAULT_DEVIATION 100
 #define DEFAULT_TIME_OUT      2
 #define SLEEPSECONDS          10
 
@@ -159,6 +159,8 @@ static void posix_timer_callback(union sigval arg)
                       (FAR struct posix_timer_state_s *)arg.sival_ptr;
   int range = get_timestamp() - (*sigev_para).tim;
 
+  syslog(0, "range: %d ms\n", range);
+
   assert_in_range(range,
           sigev_para->it.it_interval.tv_sec * 1000 - sigev_para->deviation,
           sigev_para->it.it_interval.tv_sec * 1000 + sigev_para->deviation);