diff --git a/internal/config/config_test.go b/internal/config/config_test.go
index 882fd3f7a..2daa5086f 100644
--- a/internal/config/config_test.go
+++ b/internal/config/config_test.go
@@ -112,6 +112,7 @@ listen:
 log:
   config: true
   level: info
+  format: text
 jira: []
 receivers:
   keep: []