diff --git a/include/sys/sunldi.h b/include/sys/sunldi.h
index c0875725c..97952ad2f 100644
--- a/include/sys/sunldi.h
+++ b/include/sys/sunldi.h
@@ -32,6 +32,7 @@
 #include <linux/genhd.h>
 #include <linux/hdreg.h>
 #include <linux/bio.h>
+#include <linux/blkdev.h>
 
 #define SECTOR_SIZE 512