diff --git a/.github/workflows/notify_nightly.yml b/.github/workflows/notify_nightly.yml
index 7ba45600a..0e1c36410 100644
--- a/.github/workflows/notify_nightly.yml
+++ b/.github/workflows/notify_nightly.yml
@@ -27,7 +27,7 @@ jobs:
           -H "Accept: application/vnd.github+json" \
           -H "X-GitHub-Api-Version: 2026-03-10" \
           "/repos/$GITHUB_REPOSITORY/actions/runs/$GITHUB_RUN_ID/timing" | jq '.run_duration_ms')
-        DURATION==$(date -d@"$(("$ms" / 1000))"  -u +%H:%M:%S)
+        DURATION=$(date -d@"$(("$ms" / 1000))"  -u +%H:%M:%S)
         echo "result=$DURATION" >> "$GITHUB_OUTPUT"
     - name: Send to mattermost
       uses: mattermost/action-mattermost-notify@b7d118e440bf2749cd18a4a8c88e7092e696257a
@@ -51,11 +51,11 @@ jobs:
                     "short": true
                   }
                 ],
-                "pretext": "Run <https://github.com/certbot/actions/runs/$GITHUB_RUN_ID|$GITHUB_RUN_ID> failed",
+                "pretext": "Run <https://github.com/certbot/actions/runs/${{ github.run_id }}|"${{ github.run_id }}"> failed",
                 "mrkdwn_in": [
                   "pretext"
                 ],
-                "fallback": "Run $GITHUB_RUN_ID failed https://github.com/certbot/actions/runs/$GITHUB_RUN_ID"
+                "fallback": "Run ${{ github.run_id }} failed https://github.com/certbot/actions/runs/${{ github.run_id }}"
               }
             ]
           }