diff --git a/crates/kingfisher-rules/data/rules/unkey.yml b/crates/kingfisher-rules/data/rules/unkey.yml
index a2cd45b..dabcfbf 100644
--- a/crates/kingfisher-rules/data/rules/unkey.yml
+++ b/crates/kingfisher-rules/data/rules/unkey.yml
@@ -2,7 +2,7 @@ rules:
   - name: Unkey Root Key
     id: kingfisher.unkey.1
     pattern: |
-      (?xi)
+      (?x)
       \b
       (
         unkey_[A-Za-z0-9]{20,32}