diff --git a/app/vmalert/utils/links.go b/app/vmalert/utils/links.go
index 00a9d3a62..870c42064 100644
--- a/app/vmalert/utils/links.go
+++ b/app/vmalert/utils/links.go
@@ -4,6 +4,7 @@ import "strings"
 
 const prefix = "/vmalert/"
 
+// Prefix returns "/vmalert/" prefix if it is missing in the path.
 func Prefix(path string) string {
 	if strings.HasPrefix(path, prefix) {
 		return ""