diff --git a/drivers/input/tablet/pegasus_notetaker.c b/drivers/input/tablet/pegasus_notetaker.c
index 949dacc78664..47de5a81172f 100644
--- a/drivers/input/tablet/pegasus_notetaker.c
+++ b/drivers/input/tablet/pegasus_notetaker.c
@@ -40,6 +40,7 @@
 #include <linux/input.h>
 #include <linux/usb/input.h>
 #include <linux/slab.h>
+#include <linux/workqueue.h>
 
 /* USB HID defines */
 #define USB_REQ_GET_REPORT		0x01