diff --git a/components/esp_hw_support/lowpower/port/esp32s31/sleep_clock.c b/components/esp_hw_support/lowpower/port/esp32s31/sleep_clock.c
index 179e7346534..ce2cea69469 100644
--- a/components/esp_hw_support/lowpower/port/esp32s31/sleep_clock.c
+++ b/components/esp_hw_support/lowpower/port/esp32s31/sleep_clock.c
@@ -50,7 +50,7 @@ esp_err_t sleep_clock_modem_retention_init(void *arg)
     #define N_REGS_LPCON() (((MODEM_LPCON_MODEM_INTR_STATUS_REG - MODEM_LPCON_TEST_CONF_REG) / 4) + 1)
     const static sleep_retention_entries_config_t modem_regs_retention[] = {
         [0] = { .config = REGDMA_LINK_WRITE_INIT(REGDMA_MODEMSYSCON_LINK(0), 0x20109c30, 0xf, 0xffffffff, 1, 0), .owner = ENTRY(0) | ENTRY(1) },
-        [1] = { .config = REGDMA_LINK_CONTINUOUS_INIT(REGDMA_MODEMSYSCON_LINK(1), MODEM_SYSCON_TEST_CONF_REG, MODEM_SYSCON_TEST_CONF_REG, 12, 0, 0), .owner = ENTRY(0) | ENTRY(1) }, /* MODEM SYSCON */
+        [1] = { .config = REGDMA_LINK_CONTINUOUS_INIT(REGDMA_MODEMSYSCON_LINK(1), MODEM_SYSCON_TEST_CONF_REG, MODEM_SYSCON_TEST_CONF_REG, N_REGS_SYSCON(), 0, 0), .owner = ENTRY(0) | ENTRY(1) }, /* MODEM SYSCON */
         [2] = { .config = REGDMA_LINK_CONTINUOUS_INIT(REGDMA_MODEMLPCON_LINK(0), MODEM_LPCON_TEST_CONF_REG, MODEM_LPCON_TEST_CONF_REG, N_REGS_LPCON(), 0, 0), .owner = ENTRY(0) | ENTRY(1) }, /* MODEM SYSCON */
         [3] = { .config = REGDMA_LINK_WRITE_INIT(REGDMA_CLOCK_ICG_LINK(0), HP_SYS_CLKRST_MODEM_CONF_REG, 0x3d, 0x3d, 1, 0), .owner = ENTRY(1)},
     };