diff --git a/components/esp_psram/device/esp_psram_impl_ap_hex.c b/components/esp_psram/device/esp_psram_impl_ap_hex.c
index 82a1b4e0b8..7832460eb3 100644
--- a/components/esp_psram/device/esp_psram_impl_ap_hex.c
+++ b/components/esp_psram/device/esp_psram_impl_ap_hex.c
@@ -384,8 +384,8 @@ esp_err_t esp_psram_impl_enable(void)
     s_configure_psram_ecc();
 #endif
     //enter MSPI slow mode to init PSRAM device registers
-    psram_ctrlr_ll_set_bus_clock(PSRAM_CTRLR_LL_MSPI_ID_2, 40);
-    psram_ctrlr_ll_set_bus_clock(PSRAM_CTRLR_LL_MSPI_ID_3, 40);
+    psram_ctrlr_ll_set_bus_clock(PSRAM_CTRLR_LL_MSPI_ID_2, AP_HEX_PSRAM_MPLL_DEFAULT_FREQ_MHZ / CONFIG_SPIRAM_SPEED);
+    psram_ctrlr_ll_set_bus_clock(PSRAM_CTRLR_LL_MSPI_ID_3, AP_HEX_PSRAM_MPLL_DEFAULT_FREQ_MHZ / CONFIG_SPIRAM_SPEED);
     psram_ctrlr_ll_enable_dll(PSRAM_CTRLR_LL_MSPI_ID_2, true);
     psram_ctrlr_ll_enable_dll(PSRAM_CTRLR_LL_MSPI_ID_3, true);