diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index be74347d135435e5c5b4508b8144528bc58a0459..64620d668742ea8cb3345c0a07d415e96268a3bf 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -35,8 +35,9 @@ struct acpi_device_bus_id{
  * e.g. on a device with hid:IBM0001 and cid:ACPI0001 you get:
  * char *modalias: "acpi:IBM0001:ACPI0001"
 */
-int create_modalias(struct acpi_device *acpi_dev, char *modalias, int size){
-
+static int create_modalias(struct acpi_device *acpi_dev, char *modalias,
+			   int size)
+{
 	int len;
 
 	if (!acpi_dev->flags.hardware_id)