diff --git a/util/libreboot-utils/lib/io.c b/util/libreboot-utils/lib/io.c
index a09e3992..eac6073e 100644
--- a/util/libreboot-utils/lib/io.c
+++ b/util/libreboot-utils/lib/io.c
@@ -4,6 +4,10 @@
  * I/O functions specific to nvmutil.
  */
 
+/* TODO: local tmpfiles not being deleted
+	when flags==O_RDONLY e.g. dump command
+ */
+
 #include <sys/types.h>
 #include <sys/stat.h>