diff --git a/components/esp_system/port/soc/esp32c5/clk.c b/components/esp_system/port/soc/esp32c5/clk.c
index fc017b5c02..34f972a637 100644
--- a/components/esp_system/port/soc/esp32c5/clk.c
+++ b/components/esp_system/port/soc/esp32c5/clk.c
@@ -106,6 +106,9 @@ __attribute__((weak)) void esp_clk_init(void)
 
     // Re calculate the ccount to make time calculation correct.
     esp_cpu_set_cycle_count((uint64_t)esp_cpu_get_cycle_count() * new_freq_mhz / old_freq_mhz);
+
+    // Set crypto clock (`clk_sec`) to use 160M SPLL clock
+    REG_SET_FIELD(PCR_SEC_CONF_REG, PCR_SEC_CLK_SEL, 0x2);
 }
 
 static void select_rtc_slow_clk(soc_rtc_slow_clk_src_t rtc_slow_clk_src)