diff --git a/drivers/acpi/custom_method.c b/drivers/acpi/custom_method.c
index 5d42c2414ae5..6adfc706a1de 100644
--- a/drivers/acpi/custom_method.c
+++ b/drivers/acpi/custom_method.c
@@ -1,5 +1,5 @@
 /*
- * debugfs.c - ACPI debugfs interface to userspace.
+ * custom_method.c - debugfs interface for customizing ACPI control method
  */
 
 #include <linux/init.h>