diff --git a/drivers/acpi/acpica/utprint.c b/drivers/acpi/acpica/utprint.c
index e37d612e8db59..05426596d1f4a 100644
--- a/drivers/acpi/acpica/utprint.c
+++ b/drivers/acpi/acpica/utprint.c
@@ -475,7 +475,7 @@ int vsnprintf(char *string, acpi_size size, const char *format, va_list args)
 		case 'X':
 
 			type |= ACPI_FORMAT_UPPER;
-			/* FALLTHROUGH */
+			ACPI_FALLTHROUGH;
 
 		case 'x':