diff --git a/up.sh b/up.sh
index 1c0cac1..be44443 100755
--- a/up.sh
+++ b/up.sh
@@ -25,12 +25,13 @@ function error_exit {
 
 # Package blacklist
 case "$PACKAGE_NAME" in
-    *jquery*) false;; # this isn't a real package
-    *google-cloud-sdk*) false;; # complicated package
-    *github-release*) false;; # complicated package
-    *fcitx*) false;; # gets stuck in daemons
-    *fricas*) false;; # gets stuck in emacs
-    *libxc*) false;; # currently people don't want to update this
+    *jquery*) error_exit "this isn't a real package";;
+    *google-cloud-sdk*) error_exit "complicated package";;
+    *github-release*) error_exit "complicated package";;
+    *fcitx*) error_exit "gets stuck in daemons";;
+    *fricas*) error_exit "gets stuck in emacs";;
+    *libxc*) error_exit "currently people don't want to update this https://github.com/NixOS/nixpkgs/pull/35821";;
+    perl*) error_exit "currently don't know how to update perl";;
     *) true;;
 esac || error_exit "Package on blacklist."
 
@@ -136,7 +137,7 @@ fi
 
 git diff
 
-COMMIT_MESSAGE="$PACKAGE_NAME: $OLD_VERSION -> $NEW_VERSION
+COMMIT_MESSAGE="$ATTR_PATH: $OLD_VERSION -> $NEW_VERSION
 
 Semi-automatic update generated by https://github.com/ryantm/nix-update tools. These checks were done: