diff --git a/helpers.go b/helpers.go
index 77907e6a..d0167faa 100644
--- a/helpers.go
+++ b/helpers.go
@@ -212,7 +212,7 @@ func getGroupPath(prefix, path string) string {
 		return prefix
 	}
 
-	if path[0] != '/' {
+	if len(path) > 0 && path[0] != '/' {
 		path = "/" + path
 	}