diff --git a/sys/dev/ppbus/ppb_base.c b/sys/dev/ppbus/ppb_base.c
index d74216cc29c..7f4d6a0da1e 100644
--- a/sys/dev/ppbus/ppb_base.c
+++ b/sys/dev/ppbus/ppb_base.c
@@ -39,6 +39,8 @@
 
 #include <dev/ppbus/ppbio.h>
   
+MODULE_VERSION(ppbus, 1);
+
 #define DEVTOSOFTC(dev) ((struct ppb_data *)device_get_softc(dev))
  
 /*