diff --git a/TODO b/TODO
index 0964e05..5bd205a 100644
--- a/TODO
+++ b/TODO
@@ -7,7 +7,8 @@
 [ ] Automatically detect backlight device, or at least make it configurable
 [ ] Add signal handlers
 	[ ] SIGUSR1 to reset the user offset
-	[ ] Handle kill by closing all file descriptors
+	[x] Handle kill by closing all file descriptors
+	    (every read is done by only keeping the file open for as long as it is needed)
 	[ ] Handle suspend and resume, usually suspending means that the screen is
 	    turned off so do not apply user offset
 [ ] Account for DPMS and do not apply offset in that case