diff --git a/components/esp_hw_support/port/esp32h21/cpu_region_protect.c b/components/esp_hw_support/port/esp32h21/cpu_region_protect.c
index f4e54e3693..03aabcb981 100644
--- a/components/esp_hw_support/port/esp32h21/cpu_region_protect.c
+++ b/components/esp_hw_support/port/esp32h21/cpu_region_protect.c
@@ -63,6 +63,11 @@ static void esp_cpu_configure_invalid_regions(void)
     // 7. End of address space
     PMA_RESET_AND_ENTRY_SET_TOR(11, SOC_PERIPHERAL_HIGH, PMA_NONE);
     PMA_RESET_AND_ENTRY_SET_TOR(12, UINT32_MAX, PMA_TOR | PMA_NONE);
+
+    // 8. Reset all unused pma entries in IDF
+    PMA_ENTRY_CFG_RESET(13);
+    PMA_ENTRY_CFG_RESET(14);
+    PMA_ENTRY_CFG_RESET(15);
 }
 
 void esp_cpu_configure_region_protection(void)