diff --git a/.woodpecker/nightly.yml b/.woodpecker/nightly.yml
index 58a6a52e6..5c54f2b34 100644
--- a/.woodpecker/nightly.yml
+++ b/.woodpecker/nightly.yml
@@ -118,4 +118,4 @@ steps:
 when:
   event: cron
   evaluate:
-    'CI_PREV_COMMIT_BRANCH' == 'master' and 'CI_PREV_PIPELINE_EVENT' == 'push'
+    'CI_PREV_COMMIT_BRANCH == "master" and CI_PREV_PIPELINE_EVENT' == "push"'