diff --git a/components/esp_hw_support/sleep_modes.c b/components/esp_hw_support/sleep_modes.c
index 6b213d7758..d137502922 100644
--- a/components/esp_hw_support/sleep_modes.c
+++ b/components/esp_hw_support/sleep_modes.c
@@ -162,6 +162,12 @@
 #elif CONFIG_IDF_TARGET_ESP32C2
 #define DEFAULT_SLEEP_OUT_OVERHEAD_US       (118)
 #define DEFAULT_HARDWARE_OUT_OVERHEAD_US    (9)
+# if !CONFIG_PM_SLP_IRAM_OPT
+  #undef DEFAULT_SLEEP_OUT_OVERHEAD_US
+  #define DEFAULT_SLEEP_OUT_OVERHEAD_US     (2779)
+  #undef DEFAULT_HARDWARE_OUT_OVERHEAD_US
+  #define DEFAULT_HARDWARE_OUT_OVERHEAD_US  (157)
+# endif
 #elif CONFIG_IDF_TARGET_ESP32C6
 #define DEFAULT_SLEEP_OUT_OVERHEAD_US       (318)
 #define DEFAULT_HARDWARE_OUT_OVERHEAD_US    (56)