diff --git a/components/esp_mm/esp_mmu_map.c b/components/esp_mm/esp_mmu_map.c
index 1508d3c8bf8..3c32f3a9990 100644
--- a/components/esp_mm/esp_mmu_map.c
+++ b/components/esp_mm/esp_mmu_map.c
@@ -150,7 +150,7 @@ static void s_reserve_irom_region(mem_region_t *hw_mem_regions, int region_nums)
     cache_bus_mask_t bus_mask = s_get_bus_mask((uint32_t)&_instruction_reserved_start, irom_len_to_reserve);
 
     for (int i = 0; i < SOC_MMU_LINEAR_ADDRESS_REGION_NUM; i++) {
-        if (bus_mask & hw_mem_regions[i].bus_id) {
+        if ((bus_mask & hw_mem_regions[i].bus_id) == bus_mask) {
             if (hw_mem_regions[i].region_size <= irom_len_to_reserve) {
                 hw_mem_regions[i].free_head = hw_mem_regions[i].end;
                 hw_mem_regions[i].max_slot_size = 0;
@@ -178,7 +178,7 @@ static void s_reserve_drom_region(mem_region_t *hw_mem_regions, int region_nums)
     cache_bus_mask_t bus_mask = s_get_bus_mask((uint32_t)&_rodata_reserved_start, drom_len_to_reserve);
 
     for (int i = 0; i < SOC_MMU_LINEAR_ADDRESS_REGION_NUM; i++) {
-        if (bus_mask & hw_mem_regions[i].bus_id) {
+        if ((bus_mask & hw_mem_regions[i].bus_id) == bus_mask) {
             if (hw_mem_regions[i].region_size <= drom_len_to_reserve) {
                 hw_mem_regions[i].free_head = hw_mem_regions[i].end;
                 hw_mem_regions[i].max_slot_size = 0;