diff --git a/pkgs/by-name/sane-scripts/src/sane-deadlines b/pkgs/by-name/sane-scripts/src/sane-deadlines
index bfc10fb8a..1a40c553b 100755
--- a/pkgs/by-name/sane-scripts/src/sane-deadlines
+++ b/pkgs/by-name/sane-scripts/src/sane-deadlines
@@ -26,7 +26,12 @@ if ! test -f "$deadlines" {
 
 var now=$(date +%s)
 for line in ($(cat "$deadlines") => split(u'\n')) {
-  # parse line
+  if (line === "" or line => startsWith("#")) {
+    # ignore comments
+    continue
+  }
+
+  # parse normal line
   var deadline_field=$(echo "$line" | cut -f 1)
   var threshold_field=$(echo "$line" | cut -f 2)
   var description_field=$(echo "$line" | cut -f 3)