diff --git a/block/blk.h b/block/blk.h
index ec898dd..ec9120f 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -32,6 +32,8 @@
 
 void blk_queue_congestion_threshold(struct request_queue *q);
 
+int blk_dev_init(void);
+
 /*
  * Return the threshold (number of used requests) at which the queue is
  * considered to be congested.  It include a little hysteresis to keep the
diff --git a/block/genhd.c b/block/genhd.c
index 53f2238..abc6fed 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -17,6 +17,8 @@
 #include <linux/buffer_head.h>
 #include <linux/mutex.h>
 
+#include "blk.h"
+
 static DEFINE_MUTEX(block_class_lock);
 #ifndef CONFIG_SYSFS_DEPRECATED
 struct kobject *block_depr;
@@ -346,8 +348,6 @@
 #endif
 
 
-extern int blk_dev_init(void);
-
 static struct kobject *base_probe(dev_t devt, int *part, void *data)
 {
 	if (request_module("block-major-%d-%d", MAJOR(devt), MINOR(devt)) > 0)