diff --git a/param.h b/param.h
index b3a2473ca40e5b525eb24159a2d38440db8fc59b..7ceecb59de2712deb0547aa6a7ab4c4c789662bb 100644
--- a/param.h
+++ b/param.h
@@ -4,8 +4,8 @@
 #define NCPU          8  // maximum number of CPUs
 #define NOFILE       16  // open files per process
 #define NFILE       100  // open files per system
-#define NREQUEST    100  // outstanding disk requests
 #define NBUF         10  // size of disk block cache
+#define NREQUEST   NBUF  // outstanding disk requests
 #define NINODE      100  // maximum number of active i-nodes
 #define NDEV         10  // maximum major device number
 #define ROOTDEV       1  // device number of file system root disk