diff --git a/drivers/input/mouse/focaltech.c b/drivers/input/mouse/focaltech.c
index c8c6a8cc329d711cafe11a532011c6c7b20bc3d3..54eceb30ede5090e67415a7e70ae5f43d7dd9b3f 100644
--- a/drivers/input/mouse/focaltech.c
+++ b/drivers/input/mouse/focaltech.c
@@ -390,7 +390,8 @@ static int focaltech_read_size(struct psmouse *psmouse)
 	return 0;
 }
 
-void focaltech_set_resolution(struct psmouse *psmouse, unsigned int resolution)
+static void focaltech_set_resolution(struct psmouse *psmouse,
+				     unsigned int resolution)
 {
 	/* not supported yet */
 }