diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c
index 9150ee7..f658086 100644
--- a/drivers/input/input-mt.c
+++ b/drivers/input/input-mt.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/input/mt.h>
+#include <linux/export.h>
 #include <linux/slab.h>
 
 #define TRKID_SGN	((TRKID_MAX + 1) >> 1)