diff --git a/kernel/mmu.c b/kernel/mmu.c
index f3133926a42..eb1d95ec684 100644
--- a/kernel/mmu.c
+++ b/kernel/mmu.c
@@ -242,7 +242,7 @@ static void virt_region_free(void *vaddr, size_t size)
 	}
 
 #ifndef CONFIG_KERNEL_DIRECT_MAP
-	/* Without the need to support K_DIRECT_MAP, the region must be
+	/* Without the need to support K_MEM_DIRECT_MAP, the region must be
 	 * able to be represented in the bitmap. So this case is
 	 * simple.
 	 */
@@ -259,7 +259,7 @@ static void virt_region_free(void *vaddr, size_t size)
 	num_bits = size / CONFIG_MMU_PAGE_SIZE;
 	(void)sys_bitarray_free(&virt_region_bitmap, num_bits, offset);
 #else /* !CONFIG_KERNEL_DIRECT_MAP */
-	/* With K_DIRECT_MAP, the region can be outside of the virtual
+	/* With K_MEM_DIRECT_MAP, the region can be outside of the virtual
 	 * memory space, wholly within it, or overlap partially.
 	 * So additional processing is needed to make sure we only
 	 * mark the pages within the bitmap.