Index: usr.sbin/acpi/acpidump/acpi.c
===================================================================
--- usr.sbin/acpi/acpidump/acpi.c
+++ usr.sbin/acpi/acpidump/acpi.c
@@ -226,9 +226,11 @@
 		 * 32 and 64 bit versions don't match, prefer the 32 bit
 		 * version for all subsequent tables.
 		 */
+#if defined(__i386__)
 		if (fadt->Facs != 0 &&
 		    (fadt->XFacs & 0xffffffff) != fadt->Facs)
 			fadt_revision = 1;
+#endif
 	} else
 		fadt_revision = 1;
 	return (fadt_revision);