diff --git a/tests/test_graphical_imu_calibration.py b/tests/test_graphical_imu_calibration.py
index 3eb84a3f..601905a9 100644
--- a/tests/test_graphical_imu_calibration.py
+++ b/tests/test_graphical_imu_calibration.py
@@ -130,8 +130,8 @@ class TestIMUCalibration(unittest.TestCase):
         wait_for_render(10)
 
         # Wait for calibration to complete (mock takes ~3 seconds)
-        time.sleep(3.5)
-        wait_for_render(20)
+        time.sleep(4)
+        wait_for_render(40)
 
         # Verify calibration completed
         screen = lv.screen_active()