diff --git a/src/arch/i386/include/undiload.h b/src/arch/i386/include/undiload.h
index cf234a24..cfb9066c 100644
--- a/src/arch/i386/include/undiload.h
+++ b/src/arch/i386/include/undiload.h
@@ -7,6 +7,9 @@
  *
  */
 
+struct undi_device;
+struct undi_rom;
+
 extern int undi_load_pci ( struct undi_device *undi, struct undi_rom *undirom,
 			   unsigned int bus, unsigned int devfn );
 extern int undi_unload ( struct undi_device *undi );