diff --git a/include/common.h b/include/common.h
index d2570a8..408d142 100644
--- a/include/common.h
+++ b/include/common.h
@@ -457,6 +457,10 @@
 #if defined(CONFIG_4xx) || defined(CONFIG_IOP480)
 #  if defined(CONFIG_440)
     typedef PPC440_SYS_INFO sys_info_t;
+#	if defined(CONFIG_440SPE)
+	 unsigned long determine_sysper(void);
+	 unsigned long determine_pci_clock_per(void);
+#	endif
 #  else
     typedef PPC405_SYS_INFO sys_info_t;
 #  endif