diff --git a/packages/flamenco/rsync_ui.sh b/packages/flamenco/rsync_ui.sh
index 9f9c19b1211b9cb9c1af0127289f6d4c921ebdc7..3601b2b19052cc4ebf6e3935869dcbcc8c84c46a 100755
--- a/packages/flamenco/rsync_ui.sh
+++ b/packages/flamenco/rsync_ui.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-set -e
+set -e  # error out when one of the commands in the script errors.
 
 FLAMENCO_DIR="$(dirname "$(readlink -f "$0")")"
 if [ ! -d "$FLAMENCO_DIR" ]; then