diff --git a/lib/acpi/acpi_table.c b/lib/acpi/acpi_table.c
index fd6156f63d3..a80e164bc82 100644
--- a/lib/acpi/acpi_table.c
+++ b/lib/acpi/acpi_table.c
@@ -66,6 +66,7 @@ int acpi_create_dmar(struct acpi_dmar *dmar, enum dmar_flags flags)
 
 	dmar->host_address_width = info.address_width - 1;
 	dmar->flags = flags;
+	header->checksum = table_compute_checksum(dmar, header->length);
 
 	return 0;
 }