diff --git a/drivers/staging/dgrp/dgrp_specproc.c b/drivers/staging/dgrp/dgrp_specproc.c
index 259d23aa6c29..28f5c9ab6b43 100644
--- a/drivers/staging/dgrp/dgrp_specproc.c
+++ b/drivers/staging/dgrp/dgrp_specproc.c
@@ -39,6 +39,7 @@
 #include <linux/proc_fs.h>
 #include <linux/ctype.h>
 #include <linux/seq_file.h>
+#include <linux/vmalloc.h>
 
 #include "dgrp_common.h"