1 files changed, 2 insertions, 1 deletions

diff --git a/src/include/gnunet_disk_lib.h b/src/include/gnunet_disk_lib.h
index 5e06e32eb..7718a44a7 100644
--- a/src/include/gnunet_disk_lib.h
+++ b/src/include/gnunet_disk_lib.h
@@ -292,8 +292,9 @@ GNUNET_DISK_file_test_read (const char *fil);
  * where NUM is the smallest number that is not used yet.
  *
  * @param fil name of the file to back up
+ * @return the backup file name (must be freed by caller)
  */
-void
+char*
 GNUNET_DISK_file_backup (const char *fil);