diff --git a/include/acpi/acobject.h b/include/acpi/acobject.h
index 04e9735..7e1211a 100644
--- a/include/acpi/acobject.h
+++ b/include/acpi/acobject.h
@@ -216,7 +216,7 @@
 	    /* The next two fields take advantage of the 3-byte space before NOTIFY_INFO */
 	u8 proc_id;
 	u8 length;
-	 ACPI_COMMON_NOTIFY_INFO acpi_io_address address;
+	ACPI_COMMON_NOTIFY_INFO acpi_io_address address;
 };
 
 struct acpi_object_thermal_zone {