diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c
index a5ce4bc202e33663da13eceb1bc763270fa419d9..41cf3e79493789e592c86230a4ee4b89372d0511 100644
--- a/drivers/platform/x86/panasonic-laptop.c
+++ b/drivers/platform/x86/panasonic-laptop.c
@@ -271,7 +271,7 @@ static int acpi_pcc_retrieve_biosdata(struct pcc_acpi *pcc, u32 *sinf)
 	union acpi_object *hkey = NULL;
 	int i;
 
-	status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SINF, 0,
+	status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SINF, NULL,
 				      &buffer);
 	if (ACPI_FAILURE(status)) {
 		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,