diff --git a/components/ulp/lp_core/shared/include/ulp_lp_core_cpu_freq_shared.h b/components/ulp/lp_core/shared/include/ulp_lp_core_cpu_freq_shared.h
index b690a9186a1..5a7550af024 100644
--- a/components/ulp/lp_core/shared/include/ulp_lp_core_cpu_freq_shared.h
+++ b/components/ulp/lp_core/shared/include/ulp_lp_core_cpu_freq_shared.h
@@ -25,9 +25,9 @@
 #define LP_CORE_CYCLES_PER_US_DENOM 1U
 #endif
 #else  // Default value in chip without rtc fast clock sel option
-#define LP_CORE_CPU_FREQUENCY_HZ 16000000U
-#define LP_CORE_CYCLES_PER_US_NUM 16U
-#define LP_CORE_CYCLES_PER_US_DENOM 1U
+#define LP_CORE_CPU_FREQUENCY_HZ SOC_CLK_RC_FAST_FREQ_APPROX
+#define LP_CORE_CYCLES_PER_US_NUM (SOC_CLK_RC_FAST_FREQ_APPROX / 500000U)
+#define LP_CORE_CYCLES_PER_US_DENOM 2U
 #endif
 
 /**