diff --git a/procps/fuser.c b/procps/fuser.c
index c0101e635..5698901d2 100644
--- a/procps/fuser.c
+++ b/procps/fuser.c
@@ -18,6 +18,7 @@
 #include <sys/ioctl.h>
 #include <sys/stat.h>
 #include <sys/socket.h>
+#include <sys/sysmacros.h>
 #include "busybox.h"
 
 #define FUSER_PROC_DIR "/proc"