diff --git a/examples/peripherals/timer_group/gptimer/pytest_gptimer_example.py b/examples/peripherals/timer_group/gptimer/pytest_gptimer_example.py
index 309beee822..4c65b72a7e 100644
--- a/examples/peripherals/timer_group/gptimer/pytest_gptimer_example.py
+++ b/examples/peripherals/timer_group/gptimer/pytest_gptimer_example.py
@@ -30,7 +30,7 @@ def test_gptimer_example(dut: Dut) -> None:
     for i in range(1,5):
         res = dut.expect(r'Timer alarmed, count=(\d+)', timeout=5)
         alarm_count = res.group(1).decode('utf8')
-        assert (i * 1000000 - 10) < int(alarm_count) < (i * 1000000 + 10)
+        assert (i * 1000000 - 20) < int(alarm_count) < (i * 1000000 + 20)
 
     dut.expect_exact('Stop timer')
     dut.expect_exact('Delete timer')