diff --git a/drivers/input/joystick/db9.c b/drivers/input/joystick/db9.c
index 5239594..8e7de5c 100644
--- a/drivers/input/joystick/db9.c
+++ b/drivers/input/joystick/db9.c
@@ -36,6 +36,7 @@
 #include <linux/parport.h>
 #include <linux/input.h>
 #include <linux/mutex.h>
+#include <linux/slab.h>
 
 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
 MODULE_DESCRIPTION("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver");