diff --git a/components/esp_pm/pm_impl.c b/components/esp_pm/pm_impl.c
index d11f987dbd..ebfa63fb38 100644
--- a/components/esp_pm/pm_impl.c
+++ b/components/esp_pm/pm_impl.c
@@ -455,6 +455,16 @@ esp_err_t esp_pm_configure(const void* vconfig)
     res = rtc_clk_cpu_freq_mhz_to_config(min_freq_mhz, &s_cpu_freq_by_mode[PM_MODE_APB_MIN]);
     assert(res);
     s_cpu_freq_by_mode[PM_MODE_LIGHT_SLEEP] = s_cpu_freq_by_mode[PM_MODE_APB_MIN];
+
+    if (config->light_sleep_enable) {
+        // Enable the wakeup source here because the `esp_sleep_disable_wakeup_source` in the `else`
+        // branch must be called if corresponding wakeup source is already enabled.
+        esp_sleep_enable_timer_wakeup(0);
+    } else if (s_light_sleep_en) {
+        // Since auto light-sleep will enable the timer wakeup source, to avoid affecting subsequent possible
+        // deepsleep requests, disable the timer wakeup source here.
+        esp_sleep_disable_wakeup_source(ESP_SLEEP_WAKEUP_TIMER);
+    }
     s_light_sleep_en = config->light_sleep_enable;
     s_config_changed = true;
     portEXIT_CRITICAL(&s_switch_lock);