diff --git a/enroll-diff.md b/enroll-diff.md
index 86385b2..aeadc37 100644
--- a/enroll-diff.md
+++ b/enroll-diff.md
@@ -71,8 +71,8 @@ Store in `/usr/local/bin/enroll-harvest-diff.sh` and make it `chmod 0700`
 set -euo pipefail
 
 # Required env
-: "${WEBHOOK_URL:?Set WEBHOOK_URL in /etc/enroll/enroll-harvest-diff.env}"
-: "${ENROLL_SECRET:?Set ENROLL_SECRET in /etc/enroll/enroll-harvest-diff.env}"
+: "${WEBHOOK_URL:?Set WEBHOOK_URL in /etc/enroll/enroll-harvest-diff}"
+: "${ENROLL_SECRET:?Set ENROLL_SECRET in /etc/enroll/enroll-harvest-diff}"
 
 # Optional env
 STATE_DIR="${ENROLL_STATE_DIR:-/var/lib/enroll}"