diff --git a/include/configs/PCI405.h b/include/configs/PCI405.h
index 8ab253a..9cd8f5a 100644
--- a/include/configs/PCI405.h
+++ b/include/configs/PCI405.h
@@ -133,6 +133,8 @@
 
 #undef CONFIG_ZERO_BOOTDELAY_CHECK	/* check for keypress on bootdelay==0 */
 
+#define CONFIG_VERSION_VARIABLE	1       /* include version env variable */
+
 /*-----------------------------------------------------------------------
  * PCI stuff
  *-----------------------------------------------------------------------