diff --git a/src/include/smbios.h b/src/include/smbios.h
index 7d1c333..c6132ec 100644
--- a/src/include/smbios.h
+++ b/src/include/smbios.h
@@ -40,6 +40,9 @@
 void smbios_mainboard_set_uuid(u8 *uuid);
 const char *smbios_mainboard_bios_version(void);
 u8 smbios_mainboard_enclosure_type(void);
+#ifdef CONFIG_MAINBOARD_FAMILY
+const char *smbios_mainboard_family(void);
+#endif
 
 #define BIOS_CHARACTERISTICS_PCI_SUPPORTED  (1 << 7)
 #define BIOS_CHARACTERISTICS_PC_CARD  (1 << 8)