diff --git a/services/forms/runner.go b/services/forms/runner.go
index 58d9076a85..d0a7f71ae1 100644
--- a/services/forms/runner.go
+++ b/services/forms/runner.go
@@ -15,7 +15,7 @@ import (
 // EditRunnerForm form for admin to create runner
 type EditRunnerForm struct {
 	Description  string
-	CustomLabels string
+	CustomLabels string // comma-separated
 }
 
 // Validate validates form fields