diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h
index a54cc3137da5..89af44a788df 100644
--- a/drivers/staging/comedi/comedidev.h
+++ b/drivers/staging/comedi/comedidev.h
@@ -39,6 +39,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/uaccess.h>
 #include <linux/io.h>
+#include <linux/timer.h>
 
 #include "comedi.h"