diff --git a/tests/kernel/timer/timer_behavior/boards/nrf54l20pdk_nrf54l20_cpuapp.conf b/tests/kernel/timer/timer_behavior/boards/nrf54l20pdk_nrf54l20_cpuapp.conf
new file mode 100644
index 00000000000..4b13bc80c7f
--- /dev/null
+++ b/tests/kernel/timer/timer_behavior/boards/nrf54l20pdk_nrf54l20_cpuapp.conf
@@ -0,0 +1 @@
+CONFIG_SYS_CLOCK_TICKS_PER_SEC=10000